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Finding the Fourth Proportional to 108,376.59, 162,354.56 and 79,861.80

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Solution

The fourth proportional to 108,376.59, 162,354.56 and 79,861.80 is: 119,637.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,376.59 : 162,354.56 = 79,861.80 : x
  2. Step 2: Convert to fraction form
    108,376.59/162,354.56 = 79,861.80/x
  3. Step 3: Cross multiply
    108,376.59x = 162,354.56 × 79,861.80
  4. Step 4: Simplify right side
    108,376.59x = 12,965,927,000.50
  5. Step 5: Solve for x
    x = 12,965,927,000.50/108,376.59
  6. Step 6: Final answer
    x = 119,637.71

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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.