Home / 128,304,082.60-192,456,123.90-82,387,580.20

Finding the Fourth Proportional to 128,304,082.60, 192,456,123.90 and 82,387,580.20

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Solution

The fourth proportional to 128,304,082.60, 192,456,123.90 and 82,387,580.20 is: 123,581,370.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,304,082.60 : 192,456,123.90 = 82,387,580.20 : x
  2. Step 2: Convert to fraction form
    128,304,082.60/192,456,123.90 = 82,387,580.20/x
  3. Step 3: Cross multiply
    128,304,082.60x = 192,456,123.90 × 82,387,580.20
  4. Step 4: Simplify right side
    128,304,082.60x = 15,855,994,342,792,388
  5. Step 5: Solve for x
    x = 15,855,994,342,792,388/128,304,082.60
  6. Step 6: Final answer
    x = 123,581,370.30

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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.