Home / 121,515.90-182,194.65-109,074.30

Finding the Fourth Proportional to 121,515.90, 182,194.65 and 109,074.30

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Solution

The fourth proportional to 121,515.90, 182,194.65 and 109,074.30 is: 163,540.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,515.90 : 182,194.65 = 109,074.30 : x
  2. Step 2: Convert to fraction form
    121,515.90/182,194.65 = 109,074.30/x
  3. Step 3: Cross multiply
    121,515.90x = 182,194.65 × 109,074.30
  4. Step 4: Simplify right side
    121,515.90x = 19,872,753,912.50
  5. Step 5: Solve for x
    x = 19,872,753,912.50/121,515.90
  6. Step 6: Final answer
    x = 163,540.36

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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.