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Finding the Fourth Proportional to 148,858.56, 205,425.12 and 80,874.96

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Solution

The fourth proportional to 148,858.56, 205,425.12 and 80,874.96 is: 111,607.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,858.56 : 205,425.12 = 80,874.96 : x
  2. Step 2: Convert to fraction form
    148,858.56/205,425.12 = 80,874.96/x
  3. Step 3: Cross multiply
    148,858.56x = 205,425.12 × 80,874.96
  4. Step 4: Simplify right side
    148,858.56x = 16,613,748,363.00
  5. Step 5: Solve for x
    x = 16,613,748,363.00/148,858.56
  6. Step 6: Final answer
    x = 111,607.61

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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.