Home / 129,590.22-178,836.30-72,227.94

Finding the Fourth Proportional to 129,590.22, 178,836.30 and 72,227.94

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Solution

The fourth proportional to 129,590.22, 178,836.30 and 72,227.94 is: 99,675.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,590.22 : 178,836.30 = 72,227.94 : x
  2. Step 2: Convert to fraction form
    129,590.22/178,836.30 = 72,227.94/x
  3. Step 3: Cross multiply
    129,590.22x = 178,836.30 × 72,227.94
  4. Step 4: Simplify right side
    129,590.22x = 12,916,977,546.22
  5. Step 5: Solve for x
    x = 12,916,977,546.22/129,590.22
  6. Step 6: Final answer
    x = 99,675.56

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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.