Home / 134,999.38-186,273.37-81,287.87

Finding the Fourth Proportional to 134,999.38, 186,273.37 and 81,287.87

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Solution

The fourth proportional to 134,999.38, 186,273.37 and 81,287.87 is: 112,161.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,999.38 : 186,273.37 = 81,287.87 : x
  2. Step 2: Convert to fraction form
    134,999.38/186,273.37 = 81,287.87/x
  3. Step 3: Cross multiply
    134,999.38x = 186,273.37 × 81,287.87
  4. Step 4: Simplify right side
    134,999.38x = 15,141,765,703.05
  5. Step 5: Solve for x
    x = 15,141,765,703.05/134,999.38
  6. Step 6: Final answer
    x = 112,161.75

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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.