Home / 158,664.36-218,945.70-87,042.72

Finding the Fourth Proportional to 158,664.36, 218,945.70 and 87,042.72

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Solution

The fourth proportional to 158,664.36, 218,945.70 and 87,042.72 is: 120,112.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,664.36 : 218,945.70 = 87,042.72 : x
  2. Step 2: Convert to fraction form
    158,664.36/218,945.70 = 87,042.72/x
  3. Step 3: Cross multiply
    158,664.36x = 218,945.70 × 87,042.72
  4. Step 4: Simplify right side
    158,664.36x = 19,057,629,260.30
  5. Step 5: Solve for x
    x = 19,057,629,260.30/158,664.36
  6. Step 6: Final answer
    x = 120,112.85

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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.