Home / 138,979.04-208,473.56-39,147.95

Finding the Fourth Proportional to 138,979.04, 208,473.56 and 39,147.95

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Solution

The fourth proportional to 138,979.04, 208,473.56 and 39,147.95 is: 58,723.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,979.04 : 208,473.56 = 39,147.95 : x
  2. Step 2: Convert to fraction form
    138,979.04/208,473.56 = 39,147.95/x
  3. Step 3: Cross multiply
    138,979.04x = 208,473.56 × 39,147.95
  4. Step 4: Simplify right side
    138,979.04x = 8,161,313,122.26
  5. Step 5: Solve for x
    x = 8,161,313,122.26/138,979.04
  6. Step 6: Final answer
    x = 58,723.34

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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.