Home / 137,724.30-206,586.45-90,485.10

Finding the Fourth Proportional to 137,724.30, 206,586.45 and 90,485.10

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Solution

The fourth proportional to 137,724.30, 206,586.45 and 90,485.10 is: 135,727.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,724.30 : 206,586.45 = 90,485.10 : x
  2. Step 2: Convert to fraction form
    137,724.30/206,586.45 = 90,485.10/x
  3. Step 3: Cross multiply
    137,724.30x = 206,586.45 × 90,485.10
  4. Step 4: Simplify right side
    137,724.30x = 18,692,995,586.90
  5. Step 5: Solve for x
    x = 18,692,995,586.90/137,724.30
  6. Step 6: Final answer
    x = 135,727.65

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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.