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Finding the Fourth Proportional to 170,966.80, 256,234.20 and 65,645.20

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Solution

The fourth proportional to 170,966.80, 256,234.20 and 65,645.20 is: 98,384.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,966.80 : 256,234.20 = 65,645.20 : x
  2. Step 2: Convert to fraction form
    170,966.80/256,234.20 = 65,645.20/x
  3. Step 3: Cross multiply
    170,966.80x = 256,234.20 × 65,645.20
  4. Step 4: Simplify right side
    170,966.80x = 16,820,545,305.84
  5. Step 5: Solve for x
    x = 16,820,545,305.84/170,966.80
  6. Step 6: Final answer
    x = 98,384.86

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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.