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Finding the Fourth Proportional to 124,518, 171,834.84 and 79,806

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Solution

The fourth proportional to 124,518, 171,834.84 and 79,806 is: 110,132.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,518 : 171,834.84 = 79,806 : x
  2. Step 2: Convert to fraction form
    124,518/171,834.84 = 79,806/x
  3. Step 3: Cross multiply
    124,518x = 171,834.84 × 79,806
  4. Step 4: Simplify right side
    124,518x = 13,713,451,241.04
  5. Step 5: Solve for x
    x = 13,713,451,241.04/124,518
  6. Step 6: Final answer
    x = 110,132.28

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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.