Home / 138,728.20-208,125.90-40,232.20

Finding the Fourth Proportional to 138,728.20, 208,125.90 and 40,232.20

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Solution

The fourth proportional to 138,728.20, 208,125.90 and 40,232.20 is: 60,358.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,728.20 : 208,125.90 = 40,232.20 : x
  2. Step 2: Convert to fraction form
    138,728.20/208,125.90 = 40,232.20/x
  3. Step 3: Cross multiply
    138,728.20x = 208,125.90 × 40,232.20
  4. Step 4: Simplify right side
    138,728.20x = 8,373,362,833.98
  5. Step 5: Solve for x
    x = 8,373,362,833.98/138,728.20
  6. Step 6: Final answer
    x = 60,358.04

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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.