Home / 206,476.14-309,685.05-66,216.54

Finding the Fourth Proportional to 206,476.14, 309,685.05 and 66,216.54

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Solution

The fourth proportional to 206,476.14, 309,685.05 and 66,216.54 is: 99,315.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,476.14 : 309,685.05 = 66,216.54 : x
  2. Step 2: Convert to fraction form
    206,476.14/309,685.05 = 66,216.54/x
  3. Step 3: Cross multiply
    206,476.14x = 309,685.05 × 66,216.54
  4. Step 4: Simplify right side
    206,476.14x = 20,506,272,500.73
  5. Step 5: Solve for x
    x = 20,506,272,500.73/206,476.14
  6. Step 6: Final answer
    x = 99,315.46

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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.