Home / 123,921.20-185,622.60-68,452.40

Finding the Fourth Proportional to 123,921.20, 185,622.60 and 68,452.40

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Solution

The fourth proportional to 123,921.20, 185,622.60 and 68,452.40 is: 102,535.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,921.20 : 185,622.60 = 68,452.40 : x
  2. Step 2: Convert to fraction form
    123,921.20/185,622.60 = 68,452.40/x
  3. Step 3: Cross multiply
    123,921.20x = 185,622.60 × 68,452.40
  4. Step 4: Simplify right side
    123,921.20x = 12,706,312,464.24
  5. Step 5: Solve for x
    x = 12,706,312,464.24/123,921.20
  6. Step 6: Final answer
    x = 102,535.42

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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.