Home / 138,723.92-208,428.12-88,825.52

Finding the Fourth Proportional to 138,723.92, 208,428.12 and 88,825.52

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Solution

The fourth proportional to 138,723.92, 208,428.12 and 88,825.52 is: 133,457.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,723.92 : 208,428.12 = 88,825.52 : x
  2. Step 2: Convert to fraction form
    138,723.92/208,428.12 = 88,825.52/x
  3. Step 3: Cross multiply
    138,723.92x = 208,428.12 × 88,825.52
  4. Step 4: Simplify right side
    138,723.92x = 18,513,736,141.62
  5. Step 5: Solve for x
    x = 18,513,736,141.62/138,723.92
  6. Step 6: Final answer
    x = 133,457.42

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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.