Home / 121,520.50-167,704.77-71,235.70

Finding the Fourth Proportional to 121,520.50, 167,704.77 and 71,235.70

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Solution

The fourth proportional to 121,520.50, 167,704.77 and 71,235.70 is: 98,309.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,520.50 : 167,704.77 = 71,235.70 : x
  2. Step 2: Convert to fraction form
    121,520.50/167,704.77 = 71,235.70/x
  3. Step 3: Cross multiply
    121,520.50x = 167,704.77 × 71,235.70
  4. Step 4: Simplify right side
    121,520.50x = 11,946,566,684.29
  5. Step 5: Solve for x
    x = 11,946,566,684.29/121,520.50
  6. Step 6: Final answer
    x = 98,309.06

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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.