Home / 206,065-309,227.34-87,736.12

Finding the Fourth Proportional to 206,065, 309,227.34 and 87,736.12

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Solution

The fourth proportional to 206,065, 309,227.34 and 87,736.12 is: 131,659.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,065 : 309,227.34 = 87,736.12 : x
  2. Step 2: Convert to fraction form
    206,065/309,227.34 = 87,736.12/x
  3. Step 3: Cross multiply
    206,065x = 309,227.34 × 87,736.12
  4. Step 4: Simplify right side
    206,065x = 27,130,407,009.52
  5. Step 5: Solve for x
    x = 27,130,407,009.52/206,065
  6. Step 6: Final answer
    x = 131,659.46

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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.