Home / 100,662,085.24-138,912,349.60-56,609,070.86

Finding the Fourth Proportional to 100,662,085.24, 138,912,349.60 and 56,609,070.86

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Solution

The fourth proportional to 100,662,085.24, 138,912,349.60 and 56,609,070.86 is: 78,119,770.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,662,085.24 : 138,912,349.60 = 56,609,070.86 : x
  2. Step 2: Convert to fraction form
    100,662,085.24/138,912,349.60 = 56,609,070.86/x
  3. Step 3: Cross multiply
    100,662,085.24x = 138,912,349.60 × 56,609,070.86
  4. Step 4: Simplify right side
    100,662,085.24x = 7,863,699,041,835,492
  5. Step 5: Solve for x
    x = 7,863,699,041,835,492/100,662,085.24
  6. Step 6: Final answer
    x = 78,119,770.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.