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Finding the Fourth Proportional to 123,279.80, 170,123.32 and 69,563.44

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Solution

The fourth proportional to 123,279.80, 170,123.32 and 69,563.44 is: 95,995.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,279.80 : 170,123.32 = 69,563.44 : x
  2. Step 2: Convert to fraction form
    123,279.80/170,123.32 = 69,563.44/x
  3. Step 3: Cross multiply
    123,279.80x = 170,123.32 × 69,563.44
  4. Step 4: Simplify right side
    123,279.80x = 11,834,363,363.42
  5. Step 5: Solve for x
    x = 11,834,363,363.42/123,279.80
  6. Step 6: Final answer
    x = 95,995.96

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1.5x scale

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.