Home / 109,556.22-163,901.97-82,978.80

Finding the Fourth Proportional to 109,556.22, 163,901.97 and 82,978.80

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Solution

The fourth proportional to 109,556.22, 163,901.97 and 82,978.80 is: 124,140.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,556.22 : 163,901.97 = 82,978.80 : x
  2. Step 2: Convert to fraction form
    109,556.22/163,901.97 = 82,978.80/x
  3. Step 3: Cross multiply
    109,556.22x = 163,901.97 × 82,978.80
  4. Step 4: Simplify right side
    109,556.22x = 13,600,388,173.60
  5. Step 5: Solve for x
    x = 13,600,388,173.60/109,556.22
  6. Step 6: Final answer
    x = 124,140.72

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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.