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Finding the Fourth Proportional to 108,800.78, 162,884.19 and 80,844.80

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Solution

The fourth proportional to 108,800.78, 162,884.19 and 80,844.80 is: 121,031.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,800.78 : 162,884.19 = 80,844.80 : x
  2. Step 2: Convert to fraction form
    108,800.78/162,884.19 = 80,844.80/x
  3. Step 3: Cross multiply
    108,800.78x = 162,884.19 × 80,844.80
  4. Step 4: Simplify right side
    108,800.78x = 13,168,339,763.71
  5. Step 5: Solve for x
    x = 13,168,339,763.71/108,800.78
  6. Step 6: Final answer
    x = 121,031.67

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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.