Home / 125,300.80-187,951.20-31,806.55

Finding the Fourth Proportional to 125,300.80, 187,951.20 and 31,806.55

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Solution

The fourth proportional to 125,300.80, 187,951.20 and 31,806.55 is: 47,709.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,300.80 : 187,951.20 = 31,806.55 : x
  2. Step 2: Convert to fraction form
    125,300.80/187,951.20 = 31,806.55/x
  3. Step 3: Cross multiply
    125,300.80x = 187,951.20 × 31,806.55
  4. Step 4: Simplify right side
    125,300.80x = 5,978,079,240.36
  5. Step 5: Solve for x
    x = 5,978,079,240.36/125,300.80
  6. Step 6: Final answer
    x = 47,709.83

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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.