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Finding the Fourth Proportional to 108,705.70, 162,839.85 and 73,276.30

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Solution

The fourth proportional to 108,705.70, 162,839.85 and 73,276.30 is: 109,767.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,705.70 : 162,839.85 = 73,276.30 : x
  2. Step 2: Convert to fraction form
    108,705.70/162,839.85 = 73,276.30/x
  3. Step 3: Cross multiply
    108,705.70x = 162,839.85 × 73,276.30
  4. Step 4: Simplify right side
    108,705.70x = 11,932,301,700.56
  5. Step 5: Solve for x
    x = 11,932,301,700.56/108,705.70
  6. Step 6: Final answer
    x = 109,767.03

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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.