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Finding the Fourth Proportional to 108,525.69, 162,815.17 and 87,654.87

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Solution

The fourth proportional to 108,525.69, 162,815.17 and 87,654.87 is: 131,503.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,525.69 : 162,815.17 = 87,654.87 : x
  2. Step 2: Convert to fraction form
    108,525.69/162,815.17 = 87,654.87/x
  3. Step 3: Cross multiply
    108,525.69x = 162,815.17 × 87,654.87
  4. Step 4: Simplify right side
    108,525.69x = 14,271,541,527.16
  5. Step 5: Solve for x
    x = 14,271,541,527.16/108,525.69
  6. Step 6: Final answer
    x = 131,503.81

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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.