Home / 121,271.92-167,344.38-67,555.78

Finding the Fourth Proportional to 121,271.92, 167,344.38 and 67,555.78

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Solution

The fourth proportional to 121,271.92, 167,344.38 and 67,555.78 is: 93,220.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,271.92 : 167,344.38 = 67,555.78 : x
  2. Step 2: Convert to fraction form
    121,271.92/167,344.38 = 67,555.78/x
  3. Step 3: Cross multiply
    121,271.92x = 167,344.38 × 67,555.78
  4. Step 4: Simplify right side
    121,271.92x = 11,305,080,119.52
  5. Step 5: Solve for x
    x = 11,305,080,119.52/121,271.92
  6. Step 6: Final answer
    x = 93,220.92

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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.