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Finding the Fourth Proportional to 170,939.60, 256,332.60 and 65,723.60

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Solution

The fourth proportional to 170,939.60, 256,332.60 and 65,723.60 is: 98,555.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,939.60 : 256,332.60 = 65,723.60 : x
  2. Step 2: Convert to fraction form
    170,939.60/256,332.60 = 65,723.60/x
  3. Step 3: Cross multiply
    170,939.60x = 256,332.60 × 65,723.60
  4. Step 4: Simplify right side
    170,939.60x = 16,847,101,269.36
  5. Step 5: Solve for x
    x = 16,847,101,269.36/170,939.60
  6. Step 6: Final answer
    x = 98,555.87

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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.