Home / 129,325.58-178,493.86-80,949.96

Finding the Fourth Proportional to 129,325.58, 178,493.86 and 80,949.96

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Solution

The fourth proportional to 129,325.58, 178,493.86 and 80,949.96 is: 111,726.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,325.58 : 178,493.86 = 80,949.96 : x
  2. Step 2: Convert to fraction form
    129,325.58/178,493.86 = 80,949.96/x
  3. Step 3: Cross multiply
    129,325.58x = 178,493.86 × 80,949.96
  4. Step 4: Simplify right side
    129,325.58x = 14,449,070,827.25
  5. Step 5: Solve for x
    x = 14,449,070,827.25/129,325.58
  6. Step 6: Final answer
    x = 111,726.32

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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.