Home / 99,331.60-148,882.20-40,128.40

Finding the Fourth Proportional to 99,331.60, 148,882.20 and 40,128.40

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Solution

The fourth proportional to 99,331.60, 148,882.20 and 40,128.40 is: 60,146.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,331.60 : 148,882.20 = 40,128.40 : x
  2. Step 2: Convert to fraction form
    99,331.60/148,882.20 = 40,128.40/x
  3. Step 3: Cross multiply
    99,331.60x = 148,882.20 × 40,128.40
  4. Step 4: Simplify right side
    99,331.60x = 5,974,404,474.48
  5. Step 5: Solve for x
    x = 5,974,404,474.48/99,331.60
  6. Step 6: Final answer
    x = 60,146.06

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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.