Home / 149,654.80-206,517.18-81,670.06

Finding the Fourth Proportional to 149,654.80, 206,517.18 and 81,670.06

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Solution

The fourth proportional to 149,654.80, 206,517.18 and 81,670.06 is: 112,701.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,654.80 : 206,517.18 = 81,670.06 : x
  2. Step 2: Convert to fraction form
    149,654.80/206,517.18 = 81,670.06/x
  3. Step 3: Cross multiply
    149,654.80x = 206,517.18 × 81,670.06
  4. Step 4: Simplify right side
    149,654.80x = 16,866,270,481.63
  5. Step 5: Solve for x
    x = 16,866,270,481.63/149,654.80
  6. Step 6: Final answer
    x = 112,701.17

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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.