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Finding the Fourth Proportional to 123,805.60, 170,852.20 and 67,216.96

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Solution

The fourth proportional to 123,805.60, 170,852.20 and 67,216.96 is: 92,759.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,805.60 : 170,852.20 = 67,216.96 : x
  2. Step 2: Convert to fraction form
    123,805.60/170,852.20 = 67,216.96/x
  3. Step 3: Cross multiply
    123,805.60x = 170,852.20 × 67,216.96
  4. Step 4: Simplify right side
    123,805.60x = 11,484,165,493.31
  5. Step 5: Solve for x
    x = 11,484,165,493.31/123,805.60
  6. Step 6: Final answer
    x = 92,759.66

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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.