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Finding the Fourth Proportional to 123,382.34, 170,267.69 and 66,793.72

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Solution

The fourth proportional to 123,382.34, 170,267.69 and 66,793.72 is: 92,175.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,382.34 : 170,267.69 = 66,793.72 : x
  2. Step 2: Convert to fraction form
    123,382.34/170,267.69 = 66,793.72/x
  3. Step 3: Cross multiply
    123,382.34x = 170,267.69 × 66,793.72
  4. Step 4: Simplify right side
    123,382.34x = 11,372,811,985.24
  5. Step 5: Solve for x
    x = 11,372,811,985.24/123,382.34
  6. Step 6: Final answer
    x = 92,175.36

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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.