Home / 138,979.41-208,474.13-39,148.33

Finding the Fourth Proportional to 138,979.41, 208,474.13 and 39,148.33

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Solution

The fourth proportional to 138,979.41, 208,474.13 and 39,148.33 is: 58,723.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,979.41 : 208,474.13 = 39,148.33 : x
  2. Step 2: Convert to fraction form
    138,979.41/208,474.13 = 39,148.33/x
  3. Step 3: Cross multiply
    138,979.41x = 208,474.13 × 39,148.33
  4. Step 4: Simplify right side
    138,979.41x = 8,161,413,320.78
  5. Step 5: Solve for x
    x = 8,161,413,320.78/138,979.41
  6. Step 6: Final answer
    x = 58,723.90

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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.