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Finding the Fourth Proportional to 110,752.80, 166,129.20 and 40,659.45

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Solution

The fourth proportional to 110,752.80, 166,129.20 and 40,659.45 is: 60,989.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,752.80 : 166,129.20 = 40,659.45 : x
  2. Step 2: Convert to fraction form
    110,752.80/166,129.20 = 40,659.45/x
  3. Step 3: Cross multiply
    110,752.80x = 166,129.20 × 40,659.45
  4. Step 4: Simplify right side
    110,752.80x = 6,754,721,900.94
  5. Step 5: Solve for x
    x = 6,754,721,900.94/110,752.80
  6. Step 6: Final answer
    x = 60,989.18

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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.