Home / 129,244,141.50-178,332,522.12-77,038,034.87

Finding the Fourth Proportional to 129,244,141.50, 178,332,522.12 and 77,038,034.87

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Solution

The fourth proportional to 129,244,141.50, 178,332,522.12 and 77,038,034.87 is: 106,297,948.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,244,141.50 : 178,332,522.12 = 77,038,034.87 : x
  2. Step 2: Convert to fraction form
    129,244,141.50/178,332,522.12 = 77,038,034.87/x
  3. Step 3: Cross multiply
    129,244,141.50x = 178,332,522.12 × 77,038,034.87
  4. Step 4: Simplify right side
    129,244,141.50x = 13,738,387,056,643,944
  5. Step 5: Solve for x
    x = 13,738,387,056,643,944/129,244,141.50
  6. Step 6: Final answer
    x = 106,297,948.19

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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.