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Finding the Fourth Proportional to 170,872.97, 256,308.52 and 69,670.63

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Solution

The fourth proportional to 170,872.97, 256,308.52 and 69,670.63 is: 104,505.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,872.97 : 256,308.52 = 69,670.63 : x
  2. Step 2: Convert to fraction form
    170,872.97/256,308.52 = 69,670.63/x
  3. Step 3: Cross multiply
    170,872.97x = 256,308.52 × 69,670.63
  4. Step 4: Simplify right side
    170,872.97x = 17,857,175,191.80
  5. Step 5: Solve for x
    x = 17,857,175,191.80/170,872.97
  6. Step 6: Final answer
    x = 104,505.56

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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.