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Finding the Fourth Proportional to 108,540.70, 162,811.05 and 103,932.70

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Solution

The fourth proportional to 108,540.70, 162,811.05 and 103,932.70 is: 155,899.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,540.70 : 162,811.05 = 103,932.70 : x
  2. Step 2: Convert to fraction form
    108,540.70/162,811.05 = 103,932.70/x
  3. Step 3: Cross multiply
    108,540.70x = 162,811.05 × 103,932.70
  4. Step 4: Simplify right side
    108,540.70x = 16,921,392,016.34
  5. Step 5: Solve for x
    x = 16,921,392,016.34/108,540.70
  6. Step 6: Final answer
    x = 155,899.05

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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.