Home / 99,234.80-148,643.56-80,572.40

Finding the Fourth Proportional to 99,234.80, 148,643.56 and 80,572.40

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Solution

The fourth proportional to 99,234.80, 148,643.56 and 80,572.40 is: 120,689.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,234.80 : 148,643.56 = 80,572.40 : x
  2. Step 2: Convert to fraction form
    99,234.80/148,643.56 = 80,572.40/x
  3. Step 3: Cross multiply
    99,234.80x = 148,643.56 × 80,572.40
  4. Step 4: Simplify right side
    99,234.80x = 11,976,568,373.74
  5. Step 5: Solve for x
    x = 11,976,568,373.74/99,234.80
  6. Step 6: Final answer
    x = 120,689.20

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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.