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Finding the Fourth Proportional to 170,728.60, 256,016.10 and 65,512.60

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Solution

The fourth proportional to 170,728.60, 256,016.10 and 65,512.60 is: 98,239.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,728.60 : 256,016.10 = 65,512.60 : x
  2. Step 2: Convert to fraction form
    170,728.60/256,016.10 = 65,512.60/x
  3. Step 3: Cross multiply
    170,728.60x = 256,016.10 × 65,512.60
  4. Step 4: Simplify right side
    170,728.60x = 16,772,280,352.86
  5. Step 5: Solve for x
    x = 16,772,280,352.86/170,728.60
  6. Step 6: Final answer
    x = 98,239.43

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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.