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Finding the Fourth Proportional to 125,240.78, 172,832.28 and 68,650.94

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Solution

The fourth proportional to 125,240.78, 172,832.28 and 68,650.94 is: 94,738.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,240.78 : 172,832.28 = 68,650.94 : x
  2. Step 2: Convert to fraction form
    125,240.78/172,832.28 = 68,650.94/x
  3. Step 3: Cross multiply
    125,240.78x = 172,832.28 × 68,650.94
  4. Step 4: Simplify right side
    125,240.78x = 11,865,098,484.34
  5. Step 5: Solve for x
    x = 11,865,098,484.34/125,240.78
  6. Step 6: Final answer
    x = 94,738.30

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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.