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Finding the Fourth Proportional to 125,682.79, 173,440.72 and 68,321.20

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Solution

The fourth proportional to 125,682.79, 173,440.72 and 68,321.20 is: 94,282.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,682.79 : 173,440.72 = 68,321.20 : x
  2. Step 2: Convert to fraction form
    125,682.79/173,440.72 = 68,321.20/x
  3. Step 3: Cross multiply
    125,682.79x = 173,440.72 × 68,321.20
  4. Step 4: Simplify right side
    125,682.79x = 11,849,677,416.31
  5. Step 5: Solve for x
    x = 11,849,677,416.31/125,682.79
  6. Step 6: Final answer
    x = 94,282.42

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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.