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Finding the Fourth Proportional to 108,654.64, 162,729.24 and 105,664.96

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Solution

The fourth proportional to 108,654.64, 162,729.24 and 105,664.96 is: 158,251.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,654.64 : 162,729.24 = 105,664.96 : x
  2. Step 2: Convert to fraction form
    108,654.64/162,729.24 = 105,664.96/x
  3. Step 3: Cross multiply
    108,654.64x = 162,729.24 × 105,664.96
  4. Step 4: Simplify right side
    108,654.64x = 17,194,778,635.43
  5. Step 5: Solve for x
    x = 17,194,778,635.43/108,654.64
  6. Step 6: Final answer
    x = 158,251.67

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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.