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Finding the Fourth Proportional to 157,801,651.93, 217,747,417.03 and 87,227,728.12

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Solution

The fourth proportional to 157,801,651.93, 217,747,417.03 and 87,227,728.12 is: 120,363,838.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,801,651.93 : 217,747,417.03 = 87,227,728.12 : x
  2. Step 2: Convert to fraction form
    157,801,651.93/217,747,417.03 = 87,227,728.12/x
  3. Step 3: Cross multiply
    157,801,651.93x = 217,747,417.03 × 87,227,728.12
  4. Step 4: Simplify right side
    157,801,651.93x = 18,993,612,492,069,432
  5. Step 5: Solve for x
    x = 18,993,612,492,069,432/157,801,651.93
  6. Step 6: Final answer
    x = 120,363,838.15

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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.