Home / 158,731.26-219,054.45-87,115.23

Finding the Fourth Proportional to 158,731.26, 219,054.45 and 87,115.23

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Solution

The fourth proportional to 158,731.26, 219,054.45 and 87,115.23 is: 120,221.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,731.26 : 219,054.45 = 87,115.23 : x
  2. Step 2: Convert to fraction form
    158,731.26/219,054.45 = 87,115.23/x
  3. Step 3: Cross multiply
    158,731.26x = 219,054.45 × 87,115.23
  4. Step 4: Simplify right side
    158,731.26x = 19,082,978,794.27
  5. Step 5: Solve for x
    x = 19,082,978,794.27/158,731.26
  6. Step 6: Final answer
    x = 120,221.93

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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.