Home / 131,744.65-181,912.41-121,669.39

Finding the Fourth Proportional to 131,744.65, 181,912.41 and 121,669.39

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Solution

The fourth proportional to 131,744.65, 181,912.41 and 121,669.39 is: 168,000.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,744.65 : 181,912.41 = 121,669.39 : x
  2. Step 2: Convert to fraction form
    131,744.65/181,912.41 = 121,669.39/x
  3. Step 3: Cross multiply
    131,744.65x = 181,912.41 × 121,669.39
  4. Step 4: Simplify right side
    131,744.65x = 22,133,171,958.13
  5. Step 5: Solve for x
    x = 22,133,171,958.13/131,744.65
  6. Step 6: Final answer
    x = 168,000.54

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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.