Home / 131,428.52-181,371.17-74,839.89

Finding the Fourth Proportional to 131,428.52, 181,371.17 and 74,839.89

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Solution

The fourth proportional to 131,428.52, 181,371.17 and 74,839.89 is: 103,278.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,428.52 : 181,371.17 = 74,839.89 : x
  2. Step 2: Convert to fraction form
    131,428.52/181,371.17 = 74,839.89/x
  3. Step 3: Cross multiply
    131,428.52x = 181,371.17 × 74,839.89
  4. Step 4: Simplify right side
    131,428.52x = 13,573,798,599.07
  5. Step 5: Solve for x
    x = 13,573,798,599.07/131,428.52
  6. Step 6: Final answer
    x = 103,278.95

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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.