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Finding the Fourth Proportional to 108,765.83, 150,063.20 and 63,411.72

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Solution

The fourth proportional to 108,765.83, 150,063.20 and 63,411.72 is: 87,488.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,765.83 : 150,063.20 = 63,411.72 : x
  2. Step 2: Convert to fraction form
    108,765.83/150,063.20 = 63,411.72/x
  3. Step 3: Cross multiply
    108,765.83x = 150,063.20 × 63,411.72
  4. Step 4: Simplify right side
    108,765.83x = 9,515,764,978.70
  5. Step 5: Solve for x
    x = 9,515,764,978.70/108,765.83
  6. Step 6: Final answer
    x = 87,488.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.