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Finding the Fourth Proportional to 117,143.17, 175,532.88 and 81,676.90

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Solution

The fourth proportional to 117,143.17, 175,532.88 and 81,676.90 is: 122,388.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,143.17 : 175,532.88 = 81,676.90 : x
  2. Step 2: Convert to fraction form
    117,143.17/175,532.88 = 81,676.90/x
  3. Step 3: Cross multiply
    117,143.17x = 175,532.88 × 81,676.90
  4. Step 4: Simplify right side
    117,143.17x = 14,336,981,486.47
  5. Step 5: Solve for x
    x = 14,336,981,486.47/117,143.17
  6. Step 6: Final answer
    x = 122,388.54

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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.