Home / 121,736.16-167,965.20-71,425.44

Finding the Fourth Proportional to 121,736.16, 167,965.20 and 71,425.44

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Solution

The fourth proportional to 121,736.16, 167,965.20 and 71,425.44 is: 98,549.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,736.16 : 167,965.20 = 71,425.44 : x
  2. Step 2: Convert to fraction form
    121,736.16/167,965.20 = 71,425.44/x
  3. Step 3: Cross multiply
    121,736.16x = 167,965.20 × 71,425.44
  4. Step 4: Simplify right side
    121,736.16x = 11,996,988,314.69
  5. Step 5: Solve for x
    x = 11,996,988,314.69/121,736.16
  6. Step 6: Final answer
    x = 98,549.09

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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.