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Finding the Fourth Proportional to 148,079.76, 204,350.20 and 81,011.76

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Solution

The fourth proportional to 148,079.76, 204,350.20 and 81,011.76 is: 111,796.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,079.76 : 204,350.20 = 81,011.76 : x
  2. Step 2: Convert to fraction form
    148,079.76/204,350.20 = 81,011.76/x
  3. Step 3: Cross multiply
    148,079.76x = 204,350.20 × 81,011.76
  4. Step 4: Simplify right side
    148,079.76x = 16,554,769,358.35
  5. Step 5: Solve for x
    x = 16,554,769,358.35/148,079.76
  6. Step 6: Final answer
    x = 111,796.30

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1.5x scale

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.