Home / 161,019.20-222,209.04-89,403.92

Finding the Fourth Proportional to 161,019.20, 222,209.04 and 89,403.92

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Solution

The fourth proportional to 161,019.20, 222,209.04 and 89,403.92 is: 123,378.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,019.20 : 222,209.04 = 89,403.92 : x
  2. Step 2: Convert to fraction form
    161,019.20/222,209.04 = 89,403.92/x
  3. Step 3: Cross multiply
    161,019.20x = 222,209.04 × 89,403.92
  4. Step 4: Simplify right side
    161,019.20x = 19,866,359,235.44
  5. Step 5: Solve for x
    x = 19,866,359,235.44/161,019.20
  6. Step 6: Final answer
    x = 123,378.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.