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Finding the Fourth Proportional to 108,889.58, 163,002.66 and 87,631.94

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Solution

The fourth proportional to 108,889.58, 163,002.66 and 87,631.94 is: 131,180.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,889.58 : 163,002.66 = 87,631.94 : x
  2. Step 2: Convert to fraction form
    108,889.58/163,002.66 = 87,631.94/x
  3. Step 3: Cross multiply
    108,889.58x = 163,002.66 × 87,631.94
  4. Step 4: Simplify right side
    108,889.58x = 14,284,239,320.96
  5. Step 5: Solve for x
    x = 14,284,239,320.96/108,889.58
  6. Step 6: Final answer
    x = 131,180.96

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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.