Home / 131,448.06-181,388.07-80,439.62

Finding the Fourth Proportional to 131,448.06, 181,388.07 and 80,439.62

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Solution

The fourth proportional to 131,448.06, 181,388.07 and 80,439.62 is: 111,000.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,448.06 : 181,388.07 = 80,439.62 : x
  2. Step 2: Convert to fraction form
    131,448.06/181,388.07 = 80,439.62/x
  3. Step 3: Cross multiply
    131,448.06x = 181,388.07 × 80,439.62
  4. Step 4: Simplify right side
    131,448.06x = 14,590,786,516.39
  5. Step 5: Solve for x
    x = 14,590,786,516.39/131,448.06
  6. Step 6: Final answer
    x = 111,000.39

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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.