Home / 72,132.18-108,189.12-22,212.12

Finding the Fourth Proportional to 72,132.18, 108,189.12 and 22,212.12

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Solution

The fourth proportional to 72,132.18, 108,189.12 and 22,212.12 is: 33,315.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,132.18 : 108,189.12 = 22,212.12 : x
  2. Step 2: Convert to fraction form
    72,132.18/108,189.12 = 22,212.12/x
  3. Step 3: Cross multiply
    72,132.18x = 108,189.12 × 22,212.12
  4. Step 4: Simplify right side
    72,132.18x = 2,403,109,716.13
  5. Step 5: Solve for x
    x = 2,403,109,716.13/72,132.18
  6. Step 6: Final answer
    x = 33,315.36

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1.5x scale

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.