Home / 121,559.72-167,694.90-79,102.76

Finding the Fourth Proportional to 121,559.72, 167,694.90 and 79,102.76

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Solution

The fourth proportional to 121,559.72, 167,694.90 and 79,102.76 is: 109,124.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,559.72 : 167,694.90 = 79,102.76 : x
  2. Step 2: Convert to fraction form
    121,559.72/167,694.90 = 79,102.76/x
  3. Step 3: Cross multiply
    121,559.72x = 167,694.90 × 79,102.76
  4. Step 4: Simplify right side
    121,559.72x = 13,265,129,427.92
  5. Step 5: Solve for x
    x = 13,265,129,427.92/121,559.72
  6. Step 6: Final answer
    x = 109,124.38

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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.