Home / 127,839.78-176,414.09-74,127.06

Finding the Fourth Proportional to 127,839.78, 176,414.09 and 74,127.06

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Solution

The fourth proportional to 127,839.78, 176,414.09 and 74,127.06 is: 102,292.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,839.78 : 176,414.09 = 74,127.06 : x
  2. Step 2: Convert to fraction form
    127,839.78/176,414.09 = 74,127.06/x
  3. Step 3: Cross multiply
    127,839.78x = 176,414.09 × 74,127.06
  4. Step 4: Simplify right side
    127,839.78x = 13,077,057,463.64
  5. Step 5: Solve for x
    x = 13,077,057,463.64/127,839.78
  6. Step 6: Final answer
    x = 102,292.55

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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.