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Finding the Fourth Proportional to 135,931, 187,585 and 75,500.04

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Solution

The fourth proportional to 135,931, 187,585 and 75,500.04 is: 104,190.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,931 : 187,585 = 75,500.04 : x
  2. Step 2: Convert to fraction form
    135,931/187,585 = 75,500.04/x
  3. Step 3: Cross multiply
    135,931x = 187,585 × 75,500.04
  4. Step 4: Simplify right side
    135,931x = 14,162,675,003.40
  5. Step 5: Solve for x
    x = 14,162,675,003.40/135,931
  6. Step 6: Final answer
    x = 104,190.18

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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.