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Finding the Fourth Proportional to 123,536.10, 170,480.43 and 66,947.34

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Solution

The fourth proportional to 123,536.10, 170,480.43 and 66,947.34 is: 92,387.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,536.10 : 170,480.43 = 66,947.34 : x
  2. Step 2: Convert to fraction form
    123,536.10/170,480.43 = 66,947.34/x
  3. Step 3: Cross multiply
    123,536.10x = 170,480.43 × 66,947.34
  4. Step 4: Simplify right side
    123,536.10x = 11,413,211,310.56
  5. Step 5: Solve for x
    x = 11,413,211,310.56/123,536.10
  6. Step 6: Final answer
    x = 92,387.66

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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.