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Finding the Fourth Proportional to 170,662.59, 256,108.07 and 70,822.78

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Solution

The fourth proportional to 170,662.59, 256,108.07 and 70,822.78 is: 106,281.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,662.59 : 256,108.07 = 70,822.78 : x
  2. Step 2: Convert to fraction form
    170,662.59/256,108.07 = 70,822.78/x
  3. Step 3: Cross multiply
    170,662.59x = 256,108.07 × 70,822.78
  4. Step 4: Simplify right side
    170,662.59x = 18,138,284,446.61
  5. Step 5: Solve for x
    x = 18,138,284,446.61/170,662.59
  6. Step 6: Final answer
    x = 106,281.55

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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.