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Finding the Fourth Proportional to 125,160, 187,737.96 and 30,390.96

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Solution

The fourth proportional to 125,160, 187,737.96 and 30,390.96 is: 45,585.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,160 : 187,737.96 = 30,390.96 : x
  2. Step 2: Convert to fraction form
    125,160/187,737.96 = 30,390.96/x
  3. Step 3: Cross multiply
    125,160x = 187,737.96 × 30,390.96
  4. Step 4: Simplify right side
    125,160x = 5,705,536,832.84
  5. Step 5: Solve for x
    x = 5,705,536,832.84/125,160
  6. Step 6: Final answer
    x = 45,585.94

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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.