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Finding the Fourth Proportional to 134,781.66, 185,990.72 and 74,352.42

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Solution

The fourth proportional to 134,781.66, 185,990.72 and 74,352.42 is: 102,601.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,781.66 : 185,990.72 = 74,352.42 : x
  2. Step 2: Convert to fraction form
    134,781.66/185,990.72 = 74,352.42/x
  3. Step 3: Cross multiply
    134,781.66x = 185,990.72 × 74,352.42
  4. Step 4: Simplify right side
    134,781.66x = 13,828,859,757.78
  5. Step 5: Solve for x
    x = 13,828,859,757.78/134,781.66
  6. Step 6: Final answer
    x = 102,601.94

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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.