Home / 129,711.78-179,002.26-73,123.16

Finding the Fourth Proportional to 129,711.78, 179,002.26 and 73,123.16

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Solution

The fourth proportional to 129,711.78, 179,002.26 and 73,123.16 is: 100,909.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,711.78 : 179,002.26 = 73,123.16 : x
  2. Step 2: Convert to fraction form
    129,711.78/179,002.26 = 73,123.16/x
  3. Step 3: Cross multiply
    129,711.78x = 179,002.26 × 73,123.16
  4. Step 4: Simplify right side
    129,711.78x = 13,089,210,003.33
  5. Step 5: Solve for x
    x = 13,089,210,003.33/129,711.78
  6. Step 6: Final answer
    x = 100,909.96

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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.