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Finding the Fourth Proportional to 123,393.25, 185,089.89 and 40,287.25

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Solution

The fourth proportional to 123,393.25, 185,089.89 and 40,287.25 is: 60,430.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,393.25 : 185,089.89 = 40,287.25 : x
  2. Step 2: Convert to fraction form
    123,393.25/185,089.89 = 40,287.25/x
  3. Step 3: Cross multiply
    123,393.25x = 185,089.89 × 40,287.25
  4. Step 4: Simplify right side
    123,393.25x = 7,456,762,670.90
  5. Step 5: Solve for x
    x = 7,456,762,670.90/123,393.25
  6. Step 6: Final answer
    x = 60,430.88

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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.