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Finding the Fourth Proportional to 135,127.80, 202,414.95 and 75,838.95

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Solution

The fourth proportional to 135,127.80, 202,414.95 and 75,838.95 is: 113,603.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,127.80 : 202,414.95 = 75,838.95 : x
  2. Step 2: Convert to fraction form
    135,127.80/202,414.95 = 75,838.95/x
  3. Step 3: Cross multiply
    135,127.80x = 202,414.95 × 75,838.95
  4. Step 4: Simplify right side
    135,127.80x = 15,350,937,272.30
  5. Step 5: Solve for x
    x = 15,350,937,272.30/135,127.80
  6. Step 6: Final answer
    x = 113,603.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.