Home / 129,906.56-179,269.34-72,546.86

Finding the Fourth Proportional to 129,906.56, 179,269.34 and 72,546.86

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Solution

The fourth proportional to 129,906.56, 179,269.34 and 72,546.86 is: 100,113.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,906.56 : 179,269.34 = 72,546.86 : x
  2. Step 2: Convert to fraction form
    129,906.56/179,269.34 = 72,546.86/x
  3. Step 3: Cross multiply
    129,906.56x = 179,269.34 × 72,546.86
  4. Step 4: Simplify right side
    129,906.56x = 13,005,426,452.19
  5. Step 5: Solve for x
    x = 13,005,426,452.19/129,906.56
  6. Step 6: Final answer
    x = 100,113.70

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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.