Home / 120,862.78-166,744.11-89,107.18

Finding the Fourth Proportional to 120,862.78, 166,744.11 and 89,107.18

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Solution

The fourth proportional to 120,862.78, 166,744.11 and 89,107.18 is: 122,933.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,862.78 : 166,744.11 = 89,107.18 : x
  2. Step 2: Convert to fraction form
    120,862.78/166,744.11 = 89,107.18/x
  3. Step 3: Cross multiply
    120,862.78x = 166,744.11 × 89,107.18
  4. Step 4: Simplify right side
    120,862.78x = 14,858,097,423.71
  5. Step 5: Solve for x
    x = 14,858,097,423.71/120,862.78
  6. Step 6: Final answer
    x = 122,933.61

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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.