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Finding the Fourth Proportional to 135,963.71, 187,630.12 and 75,532.80

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Solution

The fourth proportional to 135,963.71, 187,630.12 and 75,532.80 is: 104,235.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,963.71 : 187,630.12 = 75,532.80 : x
  2. Step 2: Convert to fraction form
    135,963.71/187,630.12 = 75,532.80/x
  3. Step 3: Cross multiply
    135,963.71x = 187,630.12 × 75,532.80
  4. Step 4: Simplify right side
    135,963.71x = 14,172,229,125.97
  5. Step 5: Solve for x
    x = 14,172,229,125.97/135,963.71
  6. Step 6: Final answer
    x = 104,235.38

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1.5x scale

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.