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Finding the Fourth Proportional to 108,069.12, 162,103.68 and 29,191.68

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Solution

The fourth proportional to 108,069.12, 162,103.68 and 29,191.68 is: 43,787.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,069.12 : 162,103.68 = 29,191.68 : x
  2. Step 2: Convert to fraction form
    108,069.12/162,103.68 = 29,191.68/x
  3. Step 3: Cross multiply
    108,069.12x = 162,103.68 × 29,191.68
  4. Step 4: Simplify right side
    108,069.12x = 4,732,078,753.38
  5. Step 5: Solve for x
    x = 4,732,078,753.38/108,069.12
  6. Step 6: Final answer
    x = 43,787.52

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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.