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Finding the Fourth Proportional to 121,481.56, 167,549.82 and 79,053.76

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Solution

The fourth proportional to 121,481.56, 167,549.82 and 79,053.76 is: 109,032.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,481.56 : 167,549.82 = 79,053.76 : x
  2. Step 2: Convert to fraction form
    121,481.56/167,549.82 = 79,053.76/x
  3. Step 3: Cross multiply
    121,481.56x = 167,549.82 × 79,053.76
  4. Step 4: Simplify right side
    121,481.56x = 13,245,443,258.32
  5. Step 5: Solve for x
    x = 13,245,443,258.32/121,481.56
  6. Step 6: Final answer
    x = 109,032.54

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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.