Home / 129,711.03-179,001.21-73,122.41

Finding the Fourth Proportional to 129,711.03, 179,001.21 and 73,122.41

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Solution

The fourth proportional to 129,711.03, 179,001.21 and 73,122.41 is: 100,908.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,711.03 : 179,001.21 = 73,122.41 : x
  2. Step 2: Convert to fraction form
    129,711.03/179,001.21 = 73,122.41/x
  3. Step 3: Cross multiply
    129,711.03x = 179,001.21 × 73,122.41
  4. Step 4: Simplify right side
    129,711.03x = 13,088,999,868.12
  5. Step 5: Solve for x
    x = 13,088,999,868.12/129,711.03
  6. Step 6: Final answer
    x = 100,908.92

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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.