Home / 145,378.16-218,066.62-38,761.90

Finding the Fourth Proportional to 145,378.16, 218,066.62 and 38,761.90

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Solution

The fourth proportional to 145,378.16, 218,066.62 and 38,761.90 is: 58,142.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,378.16 : 218,066.62 = 38,761.90 : x
  2. Step 2: Convert to fraction form
    145,378.16/218,066.62 = 38,761.90/x
  3. Step 3: Cross multiply
    145,378.16x = 218,066.62 × 38,761.90
  4. Step 4: Simplify right side
    145,378.16x = 8,452,676,517.78
  5. Step 5: Solve for x
    x = 8,452,676,517.78/145,378.16
  6. Step 6: Final answer
    x = 58,142.68

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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.