Home / 206,040.24-309,086.28-72,889.20

Finding the Fourth Proportional to 206,040.24, 309,086.28 and 72,889.20

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Solution

The fourth proportional to 206,040.24, 309,086.28 and 72,889.20 is: 109,342.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,040.24 : 309,086.28 = 72,889.20 : x
  2. Step 2: Convert to fraction form
    206,040.24/309,086.28 = 72,889.20/x
  3. Step 3: Cross multiply
    206,040.24x = 309,086.28 × 72,889.20
  4. Step 4: Simplify right side
    206,040.24x = 22,529,051,680.18
  5. Step 5: Solve for x
    x = 22,529,051,680.18/206,040.24
  6. Step 6: Final answer
    x = 109,342.97

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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.