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Finding the Fourth Proportional to 108,715.70, 163,073.55 and 73,286.30

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Solution

The fourth proportional to 108,715.70, 163,073.55 and 73,286.30 is: 109,929.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,715.70 : 163,073.55 = 73,286.30 : x
  2. Step 2: Convert to fraction form
    108,715.70/163,073.55 = 73,286.30/x
  3. Step 3: Cross multiply
    108,715.70x = 163,073.55 × 73,286.30
  4. Step 4: Simplify right side
    108,715.70x = 11,951,057,107.37
  5. Step 5: Solve for x
    x = 11,951,057,107.37/108,715.70
  6. Step 6: Final answer
    x = 109,929.45

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1.5x scale

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.