Home / 136,711.20-205,028.40-43,245.60

Finding the Fourth Proportional to 136,711.20, 205,028.40 and 43,245.60

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Solution

The fourth proportional to 136,711.20, 205,028.40 and 43,245.60 is: 64,856.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,711.20 : 205,028.40 = 43,245.60 : x
  2. Step 2: Convert to fraction form
    136,711.20/205,028.40 = 43,245.60/x
  3. Step 3: Cross multiply
    136,711.20x = 205,028.40 × 43,245.60
  4. Step 4: Simplify right side
    136,711.20x = 8,866,576,175.04
  5. Step 5: Solve for x
    x = 8,866,576,175.04/136,711.20
  6. Step 6: Final answer
    x = 64,856.25

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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.