Home / 99,209.12-148,812.80-40,002.88

Finding the Fourth Proportional to 99,209.12, 148,812.80 and 40,002.88

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Solution

The fourth proportional to 99,209.12, 148,812.80 and 40,002.88 is: 60,003.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,209.12 : 148,812.80 = 40,002.88 : x
  2. Step 2: Convert to fraction form
    99,209.12/148,812.80 = 40,002.88/x
  3. Step 3: Cross multiply
    99,209.12x = 148,812.80 × 40,002.88
  4. Step 4: Simplify right side
    99,209.12x = 5,952,940,580.86
  5. Step 5: Solve for x
    x = 5,952,940,580.86/99,209.12
  6. Step 6: Final answer
    x = 60,003.97

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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.