Home / 85,023.60-127,535.40-75,838.20

Finding the Fourth Proportional to 85,023.60, 127,535.40 and 75,838.20

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Solution

The fourth proportional to 85,023.60, 127,535.40 and 75,838.20 is: 113,757.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,023.60 : 127,535.40 = 75,838.20 : x
  2. Step 2: Convert to fraction form
    85,023.60/127,535.40 = 75,838.20/x
  3. Step 3: Cross multiply
    85,023.60x = 127,535.40 × 75,838.20
  4. Step 4: Simplify right side
    85,023.60x = 9,672,055,172.28
  5. Step 5: Solve for x
    x = 9,672,055,172.28/85,023.60
  6. Step 6: Final answer
    x = 113,757.30

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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.