Home / 120,421.31-166,169.95-66,705.17

Finding the Fourth Proportional to 120,421.31, 166,169.95 and 66,705.17

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Solution

The fourth proportional to 120,421.31, 166,169.95 and 66,705.17 is: 92,046.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,421.31 : 166,169.95 = 66,705.17 : x
  2. Step 2: Convert to fraction form
    120,421.31/166,169.95 = 66,705.17/x
  3. Step 3: Cross multiply
    120,421.31x = 166,169.95 × 66,705.17
  4. Step 4: Simplify right side
    120,421.31x = 11,084,393,766.03
  5. Step 5: Solve for x
    x = 11,084,393,766.03/120,421.31
  6. Step 6: Final answer
    x = 92,046.78

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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.