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Finding the Fourth Proportional to 110,721.80, 166,082.70 and 54,572.60

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Solution

The fourth proportional to 110,721.80, 166,082.70 and 54,572.60 is: 81,858.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,721.80 : 166,082.70 = 54,572.60 : x
  2. Step 2: Convert to fraction form
    110,721.80/166,082.70 = 54,572.60/x
  3. Step 3: Cross multiply
    110,721.80x = 166,082.70 × 54,572.60
  4. Step 4: Simplify right side
    110,721.80x = 9,063,564,754.02
  5. Step 5: Solve for x
    x = 9,063,564,754.02/110,721.80
  6. Step 6: Final answer
    x = 81,858.90

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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.