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Finding the Fourth Proportional to 148,670.73, 205,165.70 and 80,687.68

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Solution

The fourth proportional to 148,670.73, 205,165.70 and 80,687.68 is: 111,349.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,670.73 : 205,165.70 = 80,687.68 : x
  2. Step 2: Convert to fraction form
    148,670.73/205,165.70 = 80,687.68/x
  3. Step 3: Cross multiply
    148,670.73x = 205,165.70 × 80,687.68
  4. Step 4: Simplify right side
    148,670.73x = 16,554,344,348.58
  5. Step 5: Solve for x
    x = 16,554,344,348.58/148,670.73
  6. Step 6: Final answer
    x = 111,349.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.