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Finding the Fourth Proportional to 135,672.60, 187,239.69 and 75,262.71

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Solution

The fourth proportional to 135,672.60, 187,239.69 and 75,262.71 is: 103,868.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,672.60 : 187,239.69 = 75,262.71 : x
  2. Step 2: Convert to fraction form
    135,672.60/187,239.69 = 75,262.71/x
  3. Step 3: Cross multiply
    135,672.60x = 187,239.69 × 75,262.71
  4. Step 4: Simplify right side
    135,672.60x = 14,092,166,488.96
  5. Step 5: Solve for x
    x = 14,092,166,488.96/135,672.60
  6. Step 6: Final answer
    x = 103,868.92

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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.