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Finding the Fourth Proportional to 99,171.20, 148,756.80 and 25,299.20

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Solution

The fourth proportional to 99,171.20, 148,756.80 and 25,299.20 is: 37,948.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,171.20 : 148,756.80 = 25,299.20 : x
  2. Step 2: Convert to fraction form
    99,171.20/148,756.80 = 25,299.20/x
  3. Step 3: Cross multiply
    99,171.20x = 148,756.80 × 25,299.20
  4. Step 4: Simplify right side
    99,171.20x = 3,763,427,290.78
  5. Step 5: Solve for x
    x = 3,763,427,290.78/99,171.20
  6. Step 6: Final answer
    x = 37,948.79

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1.5x scale

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.