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Finding the Fourth Proportional to 123,759, 170,790.48 and 67,170.24

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Solution

The fourth proportional to 123,759, 170,790.48 and 67,170.24 is: 92,696.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,759 : 170,790.48 = 67,170.24 : x
  2. Step 2: Convert to fraction form
    123,759/170,790.48 = 67,170.24/x
  3. Step 3: Cross multiply
    123,759x = 170,790.48 × 67,170.24
  4. Step 4: Simplify right side
    123,759x = 11,472,037,531.32
  5. Step 5: Solve for x
    x = 11,472,037,531.32/123,759
  6. Step 6: Final answer
    x = 92,696.59

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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.