Home / 121,728.20-182,592.30-69,240.20

Finding the Fourth Proportional to 121,728.20, 182,592.30 and 69,240.20

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Solution

The fourth proportional to 121,728.20, 182,592.30 and 69,240.20 is: 103,860.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,728.20 : 182,592.30 = 69,240.20 : x
  2. Step 2: Convert to fraction form
    121,728.20/182,592.30 = 69,240.20/x
  3. Step 3: Cross multiply
    121,728.20x = 182,592.30 × 69,240.20
  4. Step 4: Simplify right side
    121,728.20x = 12,642,727,370.46
  5. Step 5: Solve for x
    x = 12,642,727,370.46/121,728.20
  6. Step 6: Final answer
    x = 103,860.30

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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.