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Finding the Fourth Proportional to 158,751.60, 219,076.97 and 87,131.81

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Solution

The fourth proportional to 158,751.60, 219,076.97 and 87,131.81 is: 120,241.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,751.60 : 219,076.97 = 87,131.81 : x
  2. Step 2: Convert to fraction form
    158,751.60/219,076.97 = 87,131.81/x
  3. Step 3: Cross multiply
    158,751.60x = 219,076.97 × 87,131.81
  4. Step 4: Simplify right side
    158,751.60x = 19,088,571,394.37
  5. Step 5: Solve for x
    x = 19,088,571,394.37/158,751.60
  6. Step 6: Final answer
    x = 120,241.76

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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.