Home / 206,161.40-309,330.12-87,888.44

Finding the Fourth Proportional to 206,161.40, 309,330.12 and 87,888.44

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Solution

The fourth proportional to 206,161.40, 309,330.12 and 87,888.44 is: 131,870.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,161.40 : 309,330.12 = 87,888.44 : x
  2. Step 2: Convert to fraction form
    206,161.40/309,330.12 = 87,888.44/x
  3. Step 3: Cross multiply
    206,161.40x = 309,330.12 × 87,888.44
  4. Step 4: Simplify right side
    206,161.40x = 27,186,541,691.81
  5. Step 5: Solve for x
    x = 27,186,541,691.81/206,161.40
  6. Step 6: Final answer
    x = 131,870.18

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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.