Home / 281,378.80-422,090.07-81,702.46

Finding the Fourth Proportional to 281,378.80, 422,090.07 and 81,702.46

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Solution

The fourth proportional to 281,378.80, 422,090.07 and 81,702.46 is: 122,560.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,378.80 : 422,090.07 = 81,702.46 : x
  2. Step 2: Convert to fraction form
    281,378.80/422,090.07 = 81,702.46/x
  3. Step 3: Cross multiply
    281,378.80x = 422,090.07 × 81,702.46
  4. Step 4: Simplify right side
    281,378.80x = 34,485,797,060.57
  5. Step 5: Solve for x
    x = 34,485,797,060.57/281,378.80
  6. Step 6: Final answer
    x = 122,560.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.