Home / 161,376.87-222,711.21-89,763.56

Finding the Fourth Proportional to 161,376.87, 222,711.21 and 89,763.56

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Solution

The fourth proportional to 161,376.87, 222,711.21 and 89,763.56 is: 123,879.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,376.87 : 222,711.21 = 89,763.56 : x
  2. Step 2: Convert to fraction form
    161,376.87/222,711.21 = 89,763.56/x
  3. Step 3: Cross multiply
    161,376.87x = 222,711.21 × 89,763.56
  4. Step 4: Simplify right side
    161,376.87x = 19,991,351,061.51
  5. Step 5: Solve for x
    x = 19,991,351,061.51/161,376.87
  6. Step 6: Final answer
    x = 123,879.90

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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.