Home / 125,212.68-187,816.28-30,443.38

Finding the Fourth Proportional to 125,212.68, 187,816.28 and 30,443.38

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Solution

The fourth proportional to 125,212.68, 187,816.28 and 30,443.38 is: 45,664.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,212.68 : 187,816.28 = 30,443.38 : x
  2. Step 2: Convert to fraction form
    125,212.68/187,816.28 = 30,443.38/x
  3. Step 3: Cross multiply
    125,212.68x = 187,816.28 × 30,443.38
  4. Step 4: Simplify right side
    125,212.68x = 5,717,761,760.47
  5. Step 5: Solve for x
    x = 5,717,761,760.47/125,212.68
  6. Step 6: Final answer
    x = 45,664.40

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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.