Home / 129,721.53-179,015.49-73,132.92

Finding the Fourth Proportional to 129,721.53, 179,015.49 and 73,132.92

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Solution

The fourth proportional to 129,721.53, 179,015.49 and 73,132.92 is: 100,923.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,721.53 : 179,015.49 = 73,132.92 : x
  2. Step 2: Convert to fraction form
    129,721.53/179,015.49 = 73,132.92/x
  3. Step 3: Cross multiply
    129,721.53x = 179,015.49 × 73,132.92
  4. Step 4: Simplify right side
    129,721.53x = 13,091,925,508.93
  5. Step 5: Solve for x
    x = 13,091,925,508.93/129,721.53
  6. Step 6: Final answer
    x = 100,923.30

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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.