Home / 221,561.20-332,341.80-81,301.60

Finding the Fourth Proportional to 221,561.20, 332,341.80 and 81,301.60

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Solution

The fourth proportional to 221,561.20, 332,341.80 and 81,301.60 is: 121,952.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,561.20 : 332,341.80 = 81,301.60 : x
  2. Step 2: Convert to fraction form
    221,561.20/332,341.80 = 81,301.60/x
  3. Step 3: Cross multiply
    221,561.20x = 332,341.80 × 81,301.60
  4. Step 4: Simplify right side
    221,561.20x = 27,019,920,086.88
  5. Step 5: Solve for x
    x = 27,019,920,086.88/221,561.20
  6. Step 6: Final answer
    x = 121,952.40

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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.