Home / 138,432.96-207,666.81-54,182.25

Finding the Fourth Proportional to 138,432.96, 207,666.81 and 54,182.25

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Solution

The fourth proportional to 138,432.96, 207,666.81 and 54,182.25 is: 81,280.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,432.96 : 207,666.81 = 54,182.25 : x
  2. Step 2: Convert to fraction form
    138,432.96/207,666.81 = 54,182.25/x
  3. Step 3: Cross multiply
    138,432.96x = 207,666.81 × 54,182.25
  4. Step 4: Simplify right side
    138,432.96x = 11,251,855,016.12
  5. Step 5: Solve for x
    x = 11,251,855,016.12/138,432.96
  6. Step 6: Final answer
    x = 81,280.17

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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.