Home / 158,661.21-218,958.16-87,043.33

Finding the Fourth Proportional to 158,661.21, 218,958.16 and 87,043.33

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Solution

The fourth proportional to 158,661.21, 218,958.16 and 87,043.33 is: 120,122.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,661.21 : 218,958.16 = 87,043.33 : x
  2. Step 2: Convert to fraction form
    158,661.21/218,958.16 = 87,043.33/x
  3. Step 3: Cross multiply
    158,661.21x = 218,958.16 × 87,043.33
  4. Step 4: Simplify right side
    158,661.21x = 19,058,848,457.00
  5. Step 5: Solve for x
    x = 19,058,848,457.00/158,661.21
  6. Step 6: Final answer
    x = 120,122.93

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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.