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Finding the Fourth Proportional to 111,326.28, 166,628.16 and 81,737.52

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Solution

The fourth proportional to 111,326.28, 166,628.16 and 81,737.52 is: 122,341.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,326.28 : 166,628.16 = 81,737.52 : x
  2. Step 2: Convert to fraction form
    111,326.28/166,628.16 = 81,737.52/x
  3. Step 3: Cross multiply
    111,326.28x = 166,628.16 × 81,737.52
  4. Step 4: Simplify right side
    111,326.28x = 13,619,772,560.56
  5. Step 5: Solve for x
    x = 13,619,772,560.56/111,326.28
  6. Step 6: Final answer
    x = 122,341.04

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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.