Home / 90,699,497,115.20-136,049,245,672.80-68,659,575,963.20

Finding the Fourth Proportional to 90,699,497,115.20, 136,049,245,672.80 and 68,659,575,963.20

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Solution

The fourth proportional to 90,699,497,115.20, 136,049,245,672.80 and 68,659,575,963.20 is: 102,989,363,944.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,699,497,115.20 : 136,049,245,672.80 = 68,659,575,963.20 : x
  2. Step 2: Convert to fraction form
    90,699,497,115.20/136,049,245,672.80 = 68,659,575,963.20/x
  3. Step 3: Cross multiply
    90,699,497,115.20x = 136,049,245,672.80 × 68,659,575,963.20
  4. Step 4: Simplify right side
    90,699,497,115.20x = 9,341,083,518,007,670,472,704
  5. Step 5: Solve for x
    x = 9,341,083,518,007,670,472,704/90,699,497,115.20
  6. Step 6: Final answer
    x = 102,989,363,944.80

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.