Home / 108,978.12-163,530.36-45,793.26

Finding the Fourth Proportional to 108,978.12, 163,530.36 and 45,793.26

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Solution

The fourth proportional to 108,978.12, 163,530.36 and 45,793.26 is: 68,716.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,978.12 : 163,530.36 = 45,793.26 : x
  2. Step 2: Convert to fraction form
    108,978.12/163,530.36 = 45,793.26/x
  3. Step 3: Cross multiply
    108,978.12x = 163,530.36 × 45,793.26
  4. Step 4: Simplify right side
    108,978.12x = 7,488,588,293.37
  5. Step 5: Solve for x
    x = 7,488,588,293.37/108,978.12
  6. Step 6: Final answer
    x = 68,716.44

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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.