Home / 131,428.14-181,370.66-74,839.52

Finding the Fourth Proportional to 131,428.14, 181,370.66 and 74,839.52

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Solution

The fourth proportional to 131,428.14, 181,370.66 and 74,839.52 is: 103,278.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,428.14 : 181,370.66 = 74,839.52 : x
  2. Step 2: Convert to fraction form
    131,428.14/181,370.66 = 74,839.52/x
  3. Step 3: Cross multiply
    131,428.14x = 181,370.66 × 74,839.52
  4. Step 4: Simplify right side
    131,428.14x = 13,573,691,855.43
  5. Step 5: Solve for x
    x = 13,573,691,855.43/131,428.14
  6. Step 6: Final answer
    x = 103,278.43

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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.