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Finding the Fourth Proportional to 101,532.96, 140,189.40 and 81,500.04

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Solution

The fourth proportional to 101,532.96, 140,189.40 and 81,500.04 is: 112,529.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,532.96 : 140,189.40 = 81,500.04 : x
  2. Step 2: Convert to fraction form
    101,532.96/140,189.40 = 81,500.04/x
  3. Step 3: Cross multiply
    101,532.96x = 140,189.40 × 81,500.04
  4. Step 4: Simplify right side
    101,532.96x = 11,425,441,707.58
  5. Step 5: Solve for x
    x = 11,425,441,707.58/101,532.96
  6. Step 6: Final answer
    x = 112,529.39

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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.