Home / 99,344.40-148,579.20-75,724.80

Finding the Fourth Proportional to 99,344.40, 148,579.20 and 75,724.80

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Solution

The fourth proportional to 99,344.40, 148,579.20 and 75,724.80 is: 113,253.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,344.40 : 148,579.20 = 75,724.80 : x
  2. Step 2: Convert to fraction form
    99,344.40/148,579.20 = 75,724.80/x
  3. Step 3: Cross multiply
    99,344.40x = 148,579.20 × 75,724.80
  4. Step 4: Simplify right side
    99,344.40x = 11,251,130,204.16
  5. Step 5: Solve for x
    x = 11,251,130,204.16/99,344.40
  6. Step 6: Final answer
    x = 113,253.79

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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.