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Finding the Fourth Proportional to 123,859.50, 170,921.52 and 67,269.66

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Solution

The fourth proportional to 123,859.50, 170,921.52 and 67,269.66 is: 92,829.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,859.50 : 170,921.52 = 67,269.66 : x
  2. Step 2: Convert to fraction form
    123,859.50/170,921.52 = 67,269.66/x
  3. Step 3: Cross multiply
    123,859.50x = 170,921.52 × 67,269.66
  4. Step 4: Simplify right side
    123,859.50x = 11,497,832,537.08
  5. Step 5: Solve for x
    x = 11,497,832,537.08/123,859.50
  6. Step 6: Final answer
    x = 92,829.64

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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.