Home / 148,713.68-205,217.88-80,729.12

Finding the Fourth Proportional to 148,713.68, 205,217.88 and 80,729.12

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Solution

The fourth proportional to 148,713.68, 205,217.88 and 80,729.12 is: 111,402.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,713.68 : 205,217.88 = 80,729.12 : x
  2. Step 2: Convert to fraction form
    148,713.68/205,217.88 = 80,729.12/x
  3. Step 3: Cross multiply
    148,713.68x = 205,217.88 × 80,729.12
  4. Step 4: Simplify right side
    148,713.68x = 16,567,058,860.67
  5. Step 5: Solve for x
    x = 16,567,058,860.67/148,713.68
  6. Step 6: Final answer
    x = 111,402.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.