Home / 129,174.83-193,799.30-54,256.44

Finding the Fourth Proportional to 129,174.83, 193,799.30 and 54,256.44

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Solution

The fourth proportional to 129,174.83, 193,799.30 and 54,256.44 is: 81,400.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,174.83 : 193,799.30 = 54,256.44 : x
  2. Step 2: Convert to fraction form
    129,174.83/193,799.30 = 54,256.44/x
  3. Step 3: Cross multiply
    129,174.83x = 193,799.30 × 54,256.44
  4. Step 4: Simplify right side
    129,174.83x = 10,514,859,821.21
  5. Step 5: Solve for x
    x = 10,514,859,821.21/129,174.83
  6. Step 6: Final answer
    x = 81,400.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.