Home / 72,771,147.70-109,156,721.55-71,814,553.90

Finding the Fourth Proportional to 72,771,147.70, 109,156,721.55 and 71,814,553.90

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Solution

The fourth proportional to 72,771,147.70, 109,156,721.55 and 71,814,553.90 is: 107,721,830.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,771,147.70 : 109,156,721.55 = 71,814,553.90 : x
  2. Step 2: Convert to fraction form
    72,771,147.70/109,156,721.55 = 71,814,553.90/x
  3. Step 3: Cross multiply
    72,771,147.70x = 109,156,721.55 × 71,814,553.90
  4. Step 4: Simplify right side
    72,771,147.70x = 7,839,041,263,299,767
  5. Step 5: Solve for x
    x = 7,839,041,263,299,767/72,771,147.70
  6. Step 6: Final answer
    x = 107,721,830.85

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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.