Home / 138,663.20-208,028.40-40,167.20

Finding the Fourth Proportional to 138,663.20, 208,028.40 and 40,167.20

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Solution

The fourth proportional to 138,663.20, 208,028.40 and 40,167.20 is: 60,260.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,663.20 : 208,028.40 = 40,167.20 : x
  2. Step 2: Convert to fraction form
    138,663.20/208,028.40 = 40,167.20/x
  3. Step 3: Cross multiply
    138,663.20x = 208,028.40 × 40,167.20
  4. Step 4: Simplify right side
    138,663.20x = 8,355,918,348.48
  5. Step 5: Solve for x
    x = 8,355,918,348.48/138,663.20
  6. Step 6: Final answer
    x = 60,260.53

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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.