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Finding the Fourth Proportional to 129,260, 178,404.37 and 83,874.26

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Solution

The fourth proportional to 129,260, 178,404.37 and 83,874.26 is: 115,763.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,260 : 178,404.37 = 83,874.26 : x
  2. Step 2: Convert to fraction form
    129,260/178,404.37 = 83,874.26/x
  3. Step 3: Cross multiply
    129,260x = 178,404.37 × 83,874.26
  4. Step 4: Simplify right side
    129,260x = 14,963,534,514.52
  5. Step 5: Solve for x
    x = 14,963,534,514.52/129,260
  6. Step 6: Final answer
    x = 115,763.07

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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.