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Finding the Fourth Proportional to 125,360.96, 172,990.08 and 68,760.32

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Solution

The fourth proportional to 125,360.96, 172,990.08 and 68,760.32 is: 94,884.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,360.96 : 172,990.08 = 68,760.32 : x
  2. Step 2: Convert to fraction form
    125,360.96/172,990.08 = 68,760.32/x
  3. Step 3: Cross multiply
    125,360.96x = 172,990.08 × 68,760.32
  4. Step 4: Simplify right side
    125,360.96x = 11,894,853,257.63
  5. Step 5: Solve for x
    x = 11,894,853,257.63/125,360.96
  6. Step 6: Final answer
    x = 94,884.83

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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.