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Finding the Fourth Proportional to 99,177.40, 148,911.90 and 69,725.80

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Solution

The fourth proportional to 99,177.40, 148,911.90 and 69,725.80 is: 104,691.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,177.40 : 148,911.90 = 69,725.80 : x
  2. Step 2: Convert to fraction form
    99,177.40/148,911.90 = 69,725.80/x
  3. Step 3: Cross multiply
    99,177.40x = 148,911.90 × 69,725.80
  4. Step 4: Simplify right side
    99,177.40x = 10,383,001,357.02
  5. Step 5: Solve for x
    x = 10,383,001,357.02/99,177.40
  6. Step 6: Final answer
    x = 104,691.20

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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.