Home / 142,131,774.92-213,197,638.05-77,489,940.38

Finding the Fourth Proportional to 142,131,774.92, 213,197,638.05 and 77,489,940.38

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Solution

The fourth proportional to 142,131,774.92, 213,197,638.05 and 77,489,940.38 is: 116,234,897.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,131,774.92 : 213,197,638.05 = 77,489,940.38 : x
  2. Step 2: Convert to fraction form
    142,131,774.92/213,197,638.05 = 77,489,940.38/x
  3. Step 3: Cross multiply
    142,131,774.92x = 213,197,638.05 × 77,489,940.38
  4. Step 4: Simplify right side
    142,131,774.92x = 16,520,672,260,585,332
  5. Step 5: Solve for x
    x = 16,520,672,260,585,332/142,131,774.92
  6. Step 6: Final answer
    x = 116,234,897.30

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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.