Home / 129,845.93-179,190.41-81,449.92

Finding the Fourth Proportional to 129,845.93, 179,190.41 and 81,449.92

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Solution

The fourth proportional to 129,845.93, 179,190.41 and 81,449.92 is: 112,402.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,845.93 : 179,190.41 = 81,449.92 : x
  2. Step 2: Convert to fraction form
    129,845.93/179,190.41 = 81,449.92/x
  3. Step 3: Cross multiply
    129,845.93x = 179,190.41 × 81,449.92
  4. Step 4: Simplify right side
    129,845.93x = 14,595,044,559.27
  5. Step 5: Solve for x
    x = 14,595,044,559.27/129,845.93
  6. Step 6: Final answer
    x = 112,402.79

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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.