Home / 121,432.50-167,598.72-71,131.50

Finding the Fourth Proportional to 121,432.50, 167,598.72 and 71,131.50

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Solution

The fourth proportional to 121,432.50, 167,598.72 and 71,131.50 is: 98,174.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,432.50 : 167,598.72 = 71,131.50 : x
  2. Step 2: Convert to fraction form
    121,432.50/167,598.72 = 71,131.50/x
  3. Step 3: Cross multiply
    121,432.50x = 167,598.72 × 71,131.50
  4. Step 4: Simplify right side
    121,432.50x = 11,921,548,351.68
  5. Step 5: Solve for x
    x = 11,921,548,351.68/121,432.50
  6. Step 6: Final answer
    x = 98,174.28

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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.