Home / 125,207.90-187,809.11-30,438.59

Finding the Fourth Proportional to 125,207.90, 187,809.11 and 30,438.59

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Solution

The fourth proportional to 125,207.90, 187,809.11 and 30,438.59 is: 45,657.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,207.90 : 187,809.11 = 30,438.59 : x
  2. Step 2: Convert to fraction form
    125,207.90/187,809.11 = 30,438.59/x
  3. Step 3: Cross multiply
    125,207.90x = 187,809.11 × 30,438.59
  4. Step 4: Simplify right side
    125,207.90x = 5,716,643,691.68
  5. Step 5: Solve for x
    x = 5,716,643,691.68/125,207.90
  6. Step 6: Final answer
    x = 45,657.21

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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.