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Finding the Fourth Proportional to 170,872.96, 256,308.51 and 69,670.61

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Solution

The fourth proportional to 170,872.96, 256,308.51 and 69,670.61 is: 104,505.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,872.96 : 256,308.51 = 69,670.61 : x
  2. Step 2: Convert to fraction form
    170,872.96/256,308.51 = 69,670.61/x
  3. Step 3: Cross multiply
    170,872.96x = 256,308.51 × 69,670.61
  4. Step 4: Simplify right side
    170,872.96x = 17,857,170,619.40
  5. Step 5: Solve for x
    x = 17,857,170,619.40/170,872.96
  6. Step 6: Final answer
    x = 104,505.54

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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.