Home / 138,847.91-208,239.39-39,017.70

Finding the Fourth Proportional to 138,847.91, 208,239.39 and 39,017.70

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Solution

The fourth proportional to 138,847.91, 208,239.39 and 39,017.70 is: 58,517.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,847.91 : 208,239.39 = 39,017.70 : x
  2. Step 2: Convert to fraction form
    138,847.91/208,239.39 = 39,017.70/x
  3. Step 3: Cross multiply
    138,847.91x = 208,239.39 × 39,017.70
  4. Step 4: Simplify right side
    138,847.91x = 8,125,022,047.20
  5. Step 5: Solve for x
    x = 8,125,022,047.20/138,847.91
  6. Step 6: Final answer
    x = 58,517.43

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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.