Home / 206,750.64-309,928.98-66,410.76

Finding the Fourth Proportional to 206,750.64, 309,928.98 and 66,410.76

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Solution

The fourth proportional to 206,750.64, 309,928.98 and 66,410.76 is: 99,552.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,750.64 : 309,928.98 = 66,410.76 : x
  2. Step 2: Convert to fraction form
    206,750.64/309,928.98 = 66,410.76/x
  3. Step 3: Cross multiply
    206,750.64x = 309,928.98 × 66,410.76
  4. Step 4: Simplify right side
    206,750.64x = 20,582,619,107.82
  5. Step 5: Solve for x
    x = 20,582,619,107.82/206,750.64
  6. Step 6: Final answer
    x = 99,552.87

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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.