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Finding the Fourth Proportional to 107,861.76, 148,859.75 and 80,590.52

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Solution

The fourth proportional to 107,861.76, 148,859.75 and 80,590.52 is: 111,222.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,861.76 : 148,859.75 = 80,590.52 : x
  2. Step 2: Convert to fraction form
    107,861.76/148,859.75 = 80,590.52/x
  3. Step 3: Cross multiply
    107,861.76x = 148,859.75 × 80,590.52
  4. Step 4: Simplify right side
    107,861.76x = 11,996,684,488.90
  5. Step 5: Solve for x
    x = 11,996,684,488.90/107,861.76
  6. Step 6: Final answer
    x = 111,222.78

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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.