Home / 85,418.40-127,825.20-74,445.60

Finding the Fourth Proportional to 85,418.40, 127,825.20 and 74,445.60

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Solution

The fourth proportional to 85,418.40, 127,825.20 and 74,445.60 is: 111,404.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,418.40 : 127,825.20 = 74,445.60 : x
  2. Step 2: Convert to fraction form
    85,418.40/127,825.20 = 74,445.60/x
  3. Step 3: Cross multiply
    85,418.40x = 127,825.20 × 74,445.60
  4. Step 4: Simplify right side
    85,418.40x = 9,516,023,709.12
  5. Step 5: Solve for x
    x = 9,516,023,709.12/85,418.40
  6. Step 6: Final answer
    x = 111,404.85

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1.5x scale

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.