Home / 103,791.12-155,587-66,245.20

Finding the Fourth Proportional to 103,791.12, 155,587 and 66,245.20

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Solution

The fourth proportional to 103,791.12, 155,587 and 66,245.20 is: 99,304.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,791.12 : 155,587 = 66,245.20 : x
  2. Step 2: Convert to fraction form
    103,791.12/155,587 = 66,245.20/x
  3. Step 3: Cross multiply
    103,791.12x = 155,587 × 66,245.20
  4. Step 4: Simplify right side
    103,791.12x = 10,306,891,932.40
  5. Step 5: Solve for x
    x = 10,306,891,932.40/103,791.12
  6. Step 6: Final answer
    x = 99,304.18

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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.