Home / 125,434.90-188,185.14-72,793.78

Finding the Fourth Proportional to 125,434.90, 188,185.14 and 72,793.78

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Solution

The fourth proportional to 125,434.90, 188,185.14 and 72,793.78 is: 109,209.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,434.90 : 188,185.14 = 72,793.78 : x
  2. Step 2: Convert to fraction form
    125,434.90/188,185.14 = 72,793.78/x
  3. Step 3: Cross multiply
    125,434.90x = 188,185.14 × 72,793.78
  4. Step 4: Simplify right side
    125,434.90x = 13,698,707,680.43
  5. Step 5: Solve for x
    x = 13,698,707,680.43/125,434.90
  6. Step 6: Final answer
    x = 109,209.70

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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.