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Finding the Fourth Proportional to 170,748.70, 256,123.05 and 108,694.30

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Solution

The fourth proportional to 170,748.70, 256,123.05 and 108,694.30 is: 163,041.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,748.70 : 256,123.05 = 108,694.30 : x
  2. Step 2: Convert to fraction form
    170,748.70/256,123.05 = 108,694.30/x
  3. Step 3: Cross multiply
    170,748.70x = 256,123.05 × 108,694.30
  4. Step 4: Simplify right side
    170,748.70x = 27,839,115,633.62
  5. Step 5: Solve for x
    x = 27,839,115,633.62/170,748.70
  6. Step 6: Final answer
    x = 163,041.45

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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.