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Finding the Fourth Proportional to 141,687, 195,510.96 and 81,254.52

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Solution

The fourth proportional to 141,687, 195,510.96 and 81,254.52 is: 112,121.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,687 : 195,510.96 = 81,254.52 : x
  2. Step 2: Convert to fraction form
    141,687/195,510.96 = 81,254.52/x
  3. Step 3: Cross multiply
    141,687x = 195,510.96 × 81,254.52
  4. Step 4: Simplify right side
    141,687x = 15,886,149,209.54
  5. Step 5: Solve for x
    x = 15,886,149,209.54/141,687
  6. Step 6: Final answer
    x = 112,121.43

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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.