Home / 161,131.65-222,361.92-89,509.83

Finding the Fourth Proportional to 161,131.65, 222,361.92 and 89,509.83

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Solution

The fourth proportional to 161,131.65, 222,361.92 and 89,509.83 is: 123,523.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,131.65 : 222,361.92 = 89,509.83 : x
  2. Step 2: Convert to fraction form
    161,131.65/222,361.92 = 89,509.83/x
  3. Step 3: Cross multiply
    161,131.65x = 222,361.92 × 89,509.83
  4. Step 4: Simplify right side
    161,131.65x = 19,903,577,657.67
  5. Step 5: Solve for x
    x = 19,903,577,657.67/161,131.65
  6. Step 6: Final answer
    x = 123,523.70

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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.