Home / 90,699,478,541.20-136,049,217,811.80-68,659,557,389.20

Finding the Fourth Proportional to 90,699,478,541.20, 136,049,217,811.80 and 68,659,557,389.20

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Solution

The fourth proportional to 90,699,478,541.20, 136,049,217,811.80 and 68,659,557,389.20 is: 102,989,336,083.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,699,478,541.20 : 136,049,217,811.80 = 68,659,557,389.20 : x
  2. Step 2: Convert to fraction form
    90,699,478,541.20/136,049,217,811.80 = 68,659,557,389.20/x
  3. Step 3: Cross multiply
    90,699,478,541.20x = 136,049,217,811.80 × 68,659,557,389.20
  4. Step 4: Simplify right side
    90,699,478,541.20x = 9,341,079,078,105,052,610,560
  5. Step 5: Solve for x
    x = 9,341,079,078,105,052,610,560/90,699,478,541.20
  6. Step 6: Final answer
    x = 102,989,336,083.80

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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.