Home / 123,991.20-185,727.60-68,522.40

Finding the Fourth Proportional to 123,991.20, 185,727.60 and 68,522.40

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Solution

The fourth proportional to 123,991.20, 185,727.60 and 68,522.40 is: 102,640.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,991.20 : 185,727.60 = 68,522.40 : x
  2. Step 2: Convert to fraction form
    123,991.20/185,727.60 = 68,522.40/x
  3. Step 3: Cross multiply
    123,991.20x = 185,727.60 × 68,522.40
  4. Step 4: Simplify right side
    123,991.20x = 12,726,500,898.24
  5. Step 5: Solve for x
    x = 12,726,500,898.24/123,991.20
  6. Step 6: Final answer
    x = 102,640.36

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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.