Home / 145,542.38-218,304.66-85,604

Finding the Fourth Proportional to 145,542.38, 218,304.66 and 85,604

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Solution

The fourth proportional to 145,542.38, 218,304.66 and 85,604 is: 128,400.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,542.38 : 218,304.66 = 85,604 : x
  2. Step 2: Convert to fraction form
    145,542.38/218,304.66 = 85,604/x
  3. Step 3: Cross multiply
    145,542.38x = 218,304.66 × 85,604
  4. Step 4: Simplify right side
    145,542.38x = 18,687,752,114.64
  5. Step 5: Solve for x
    x = 18,687,752,114.64/145,542.38
  6. Step 6: Final answer
    x = 128,400.76

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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.