Home / 85,118.40-127,375.20-74,145.60

Finding the Fourth Proportional to 85,118.40, 127,375.20 and 74,145.60

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Solution

The fourth proportional to 85,118.40, 127,375.20 and 74,145.60 is: 110,954.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,118.40 : 127,375.20 = 74,145.60 : x
  2. Step 2: Convert to fraction form
    85,118.40/127,375.20 = 74,145.60/x
  3. Step 3: Cross multiply
    85,118.40x = 127,375.20 × 74,145.60
  4. Step 4: Simplify right side
    85,118.40x = 9,444,310,629.12
  5. Step 5: Solve for x
    x = 9,444,310,629.12/85,118.40
  6. Step 6: Final answer
    x = 110,954.98

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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.