Home / 125,142.72-187,712.51-30,373.70

Finding the Fourth Proportional to 125,142.72, 187,712.51 and 30,373.70

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Solution

The fourth proportional to 125,142.72, 187,712.51 and 30,373.70 is: 45,560.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,142.72 : 187,712.51 = 30,373.70 : x
  2. Step 2: Convert to fraction form
    125,142.72/187,712.51 = 30,373.70/x
  3. Step 3: Cross multiply
    125,142.72x = 187,712.51 × 30,373.70
  4. Step 4: Simplify right side
    125,142.72x = 5,701,522,374.56
  5. Step 5: Solve for x
    x = 5,701,522,374.56/125,142.72
  6. Step 6: Final answer
    x = 45,560.16

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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.