Home / 121,581.24-167,778.62-67,865.11

Finding the Fourth Proportional to 121,581.24, 167,778.62 and 67,865.11

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Solution

The fourth proportional to 121,581.24, 167,778.62 and 67,865.11 is: 93,651.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,581.24 : 167,778.62 = 67,865.11 : x
  2. Step 2: Convert to fraction form
    121,581.24/167,778.62 = 67,865.11/x
  3. Step 3: Cross multiply
    121,581.24x = 167,778.62 × 67,865.11
  4. Step 4: Simplify right side
    121,581.24x = 11,386,313,997.67
  5. Step 5: Solve for x
    x = 11,386,313,997.67/121,581.24
  6. Step 6: Final answer
    x = 93,651.90

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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.