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Finding the Fourth Proportional to 125,152.74, 187,689.81 and 40,893.69

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Solution

The fourth proportional to 125,152.74, 187,689.81 and 40,893.69 is: 61,327.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,152.74 : 187,689.81 = 40,893.69 : x
  2. Step 2: Convert to fraction form
    125,152.74/187,689.81 = 40,893.69/x
  3. Step 3: Cross multiply
    125,152.74x = 187,689.81 × 40,893.69
  4. Step 4: Simplify right side
    125,152.74x = 7,675,328,906.30
  5. Step 5: Solve for x
    x = 7,675,328,906.30/125,152.74
  6. Step 6: Final answer
    x = 61,327.69

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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.