Home / 121,451.40-167,680.94-76,191.44

Finding the Fourth Proportional to 121,451.40, 167,680.94 and 76,191.44

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Solution

The fourth proportional to 121,451.40, 167,680.94 and 76,191.44 is: 105,193.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,451.40 : 167,680.94 = 76,191.44 : x
  2. Step 2: Convert to fraction form
    121,451.40/167,680.94 = 76,191.44/x
  3. Step 3: Cross multiply
    121,451.40x = 167,680.94 × 76,191.44
  4. Step 4: Simplify right side
    121,451.40x = 12,775,851,059.79
  5. Step 5: Solve for x
    x = 12,775,851,059.79/121,451.40
  6. Step 6: Final answer
    x = 105,193.11

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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.