Home / 131,832.06-181,896.66-78,107.78

Finding the Fourth Proportional to 131,832.06, 181,896.66 and 78,107.78

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Solution

The fourth proportional to 131,832.06, 181,896.66 and 78,107.78 is: 107,770.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,832.06 : 181,896.66 = 78,107.78 : x
  2. Step 2: Convert to fraction form
    131,832.06/181,896.66 = 78,107.78/x
  3. Step 3: Cross multiply
    131,832.06x = 181,896.66 × 78,107.78
  4. Step 4: Simplify right side
    131,832.06x = 14,207,544,302.01
  5. Step 5: Solve for x
    x = 14,207,544,302.01/131,832.06
  6. Step 6: Final answer
    x = 107,770.02

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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.