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Finding the Fourth Proportional to 99,728.70, 132,534.20 and 99,728.70

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Solution

The fourth proportional to 99,728.70, 132,534.20 and 99,728.70 is: 132,534.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,728.70 : 132,534.20 = 99,728.70 : x
  2. Step 2: Convert to fraction form
    99,728.70/132,534.20 = 99,728.70/x
  3. Step 3: Cross multiply
    99,728.70x = 132,534.20 × 99,728.70
  4. Step 4: Simplify right side
    99,728.70x = 13,217,462,972.90
  5. Step 5: Solve for x
    x = 13,217,462,972.90/99,728.70
  6. Step 6: Final answer
    x = 132,534.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.