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Finding the Fourth Proportional to 170,902.20, 256,398.10 and 65,724.60

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Solution

The fourth proportional to 170,902.20, 256,398.10 and 65,724.60 is: 98,604.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,902.20 : 256,398.10 = 65,724.60 : x
  2. Step 2: Convert to fraction form
    170,902.20/256,398.10 = 65,724.60/x
  3. Step 3: Cross multiply
    170,902.20x = 256,398.10 × 65,724.60
  4. Step 4: Simplify right side
    170,902.20x = 16,851,662,563.26
  5. Step 5: Solve for x
    x = 16,851,662,563.26/170,902.20
  6. Step 6: Final answer
    x = 98,604.13

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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.