Home / 121,865.11-182,723.85-79,694.28

Finding the Fourth Proportional to 121,865.11, 182,723.85 and 79,694.28

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Solution

The fourth proportional to 121,865.11, 182,723.85 and 79,694.28 is: 119,493.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,865.11 : 182,723.85 = 79,694.28 : x
  2. Step 2: Convert to fraction form
    121,865.11/182,723.85 = 79,694.28/x
  3. Step 3: Cross multiply
    121,865.11x = 182,723.85 × 79,694.28
  4. Step 4: Simplify right side
    121,865.11x = 14,562,045,664.58
  5. Step 5: Solve for x
    x = 14,562,045,664.58/121,865.11
  6. Step 6: Final answer
    x = 119,493.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.