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Finding the Fourth Proportional to 110,279.80, 165,419.70 and 108,530.20

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Solution

The fourth proportional to 110,279.80, 165,419.70 and 108,530.20 is: 162,795.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,279.80 : 165,419.70 = 108,530.20 : x
  2. Step 2: Convert to fraction form
    110,279.80/165,419.70 = 108,530.20/x
  3. Step 3: Cross multiply
    110,279.80x = 165,419.70 × 108,530.20
  4. Step 4: Simplify right side
    110,279.80x = 17,953,033,124.94
  5. Step 5: Solve for x
    x = 17,953,033,124.94/110,279.80
  6. Step 6: Final answer
    x = 162,795.30

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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.