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Finding the Fourth Proportional to 124,375.78, 171,666.30 and 79,044.94

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Solution

The fourth proportional to 124,375.78, 171,666.30 and 79,044.94 is: 109,099.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,375.78 : 171,666.30 = 79,044.94 : x
  2. Step 2: Convert to fraction form
    124,375.78/171,666.30 = 79,044.94/x
  3. Step 3: Cross multiply
    124,375.78x = 171,666.30 × 79,044.94
  4. Step 4: Simplify right side
    124,375.78x = 13,569,352,383.52
  5. Step 5: Solve for x
    x = 13,569,352,383.52/124,375.78
  6. Step 6: Final answer
    x = 109,099.64

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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.