Home / 125,138.57-187,706.25-30,369.53

Finding the Fourth Proportional to 125,138.57, 187,706.25 and 30,369.53

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Solution

The fourth proportional to 125,138.57, 187,706.25 and 30,369.53 is: 45,553.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,138.57 : 187,706.25 = 30,369.53 : x
  2. Step 2: Convert to fraction form
    125,138.57/187,706.25 = 30,369.53/x
  3. Step 3: Cross multiply
    125,138.57x = 187,706.25 × 30,369.53
  4. Step 4: Simplify right side
    125,138.57x = 5,700,551,059.83
  5. Step 5: Solve for x
    x = 5,700,551,059.83/125,138.57
  6. Step 6: Final answer
    x = 45,553.91

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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.