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Finding the Fourth Proportional to 110,897.70, 166,346.55 and 81,373.20

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Solution

The fourth proportional to 110,897.70, 166,346.55 and 81,373.20 is: 122,059.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,897.70 : 166,346.55 = 81,373.20 : x
  2. Step 2: Convert to fraction form
    110,897.70/166,346.55 = 81,373.20/x
  3. Step 3: Cross multiply
    110,897.70x = 166,346.55 × 81,373.20
  4. Step 4: Simplify right side
    110,897.70x = 13,536,151,082.46
  5. Step 5: Solve for x
    x = 13,536,151,082.46/110,897.70
  6. Step 6: Final answer
    x = 122,059.80

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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.