Home / 209,864.10-314,834.55-85,217.70

Finding the Fourth Proportional to 209,864.10, 314,834.55 and 85,217.70

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Solution

The fourth proportional to 209,864.10, 314,834.55 and 85,217.70 is: 127,842.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,864.10 : 314,834.55 = 85,217.70 : x
  2. Step 2: Convert to fraction form
    209,864.10/314,834.55 = 85,217.70/x
  3. Step 3: Cross multiply
    209,864.10x = 314,834.55 × 85,217.70
  4. Step 4: Simplify right side
    209,864.10x = 26,829,476,231.54
  5. Step 5: Solve for x
    x = 26,829,476,231.54/209,864.10
  6. Step 6: Final answer
    x = 127,842.14

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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.