Home / 138,918.15-208,371.42-58,934.16

Finding the Fourth Proportional to 138,918.15, 208,371.42 and 58,934.16

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Solution

The fourth proportional to 138,918.15, 208,371.42 and 58,934.16 is: 88,398.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,918.15 : 208,371.42 = 58,934.16 : x
  2. Step 2: Convert to fraction form
    138,918.15/208,371.42 = 58,934.16/x
  3. Step 3: Cross multiply
    138,918.15x = 208,371.42 × 58,934.16
  4. Step 4: Simplify right side
    138,918.15x = 12,280,194,605.71
  5. Step 5: Solve for x
    x = 12,280,194,605.71/138,918.15
  6. Step 6: Final answer
    x = 88,398.78

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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.