Home / 206,119.17-308,653.85-135,785.25

Finding the Fourth Proportional to 206,119.17, 308,653.85 and 135,785.25

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Solution

The fourth proportional to 206,119.17, 308,653.85 and 135,785.25 is: 203,332.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,119.17 : 308,653.85 = 135,785.25 : x
  2. Step 2: Convert to fraction form
    206,119.17/308,653.85 = 135,785.25/x
  3. Step 3: Cross multiply
    206,119.17x = 308,653.85 × 135,785.25
  4. Step 4: Simplify right side
    206,119.17x = 41,910,639,506.79
  5. Step 5: Solve for x
    x = 41,910,639,506.79/206,119.17
  6. Step 6: Final answer
    x = 203,332.08

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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.