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Finding the Fourth Proportional to 125,510.40, 188,261.76 and 42,397.44

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Solution

The fourth proportional to 125,510.40, 188,261.76 and 42,397.44 is: 63,594.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,510.40 : 188,261.76 = 42,397.44 : x
  2. Step 2: Convert to fraction form
    125,510.40/188,261.76 = 42,397.44/x
  3. Step 3: Cross multiply
    125,510.40x = 188,261.76 × 42,397.44
  4. Step 4: Simplify right side
    125,510.40x = 7,981,816,673.89
  5. Step 5: Solve for x
    x = 7,981,816,673.89/125,510.40
  6. Step 6: Final answer
    x = 63,594.86

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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.