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Finding the Fourth Proportional to 115,620.80, 173,529.96 and 82,422.08

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Solution

The fourth proportional to 115,620.80, 173,529.96 and 82,422.08 is: 123,703.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,620.80 : 173,529.96 = 82,422.08 : x
  2. Step 2: Convert to fraction form
    115,620.80/173,529.96 = 82,422.08/x
  3. Step 3: Cross multiply
    115,620.80x = 173,529.96 × 82,422.08
  4. Step 4: Simplify right side
    115,620.80x = 14,302,700,245.52
  5. Step 5: Solve for x
    x = 14,302,700,245.52/115,620.80
  6. Step 6: Final answer
    x = 123,703.52

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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.