Home / 138,693.16-208,061.34-45,177.16

Finding the Fourth Proportional to 138,693.16, 208,061.34 and 45,177.16

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Solution

The fourth proportional to 138,693.16, 208,061.34 and 45,177.16 is: 67,772.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,693.16 : 208,061.34 = 45,177.16 : x
  2. Step 2: Convert to fraction form
    138,693.16/208,061.34 = 45,177.16/x
  3. Step 3: Cross multiply
    138,693.16x = 208,061.34 × 45,177.16
  4. Step 4: Simplify right side
    138,693.16x = 9,399,620,446.99
  5. Step 5: Solve for x
    x = 9,399,620,446.99/138,693.16
  6. Step 6: Final answer
    x = 67,772.78

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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.