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Finding the Fourth Proportional to 121,480.56, 167,548.44 and 79,052.76

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Solution

The fourth proportional to 121,480.56, 167,548.44 and 79,052.76 is: 109,031.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,480.56 : 167,548.44 = 79,052.76 : x
  2. Step 2: Convert to fraction form
    121,480.56/167,548.44 = 79,052.76/x
  3. Step 3: Cross multiply
    121,480.56x = 167,548.44 × 79,052.76
  4. Step 4: Simplify right side
    121,480.56x = 13,245,166,615.69
  5. Step 5: Solve for x
    x = 13,245,166,615.69/121,480.56
  6. Step 6: Final answer
    x = 109,031.16

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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.