Home / 158,732.64-219,055.30-87,115.20

Finding the Fourth Proportional to 158,732.64, 219,055.30 and 87,115.20

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Solution

The fourth proportional to 158,732.64, 219,055.30 and 87,115.20 is: 120,221.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,732.64 : 219,055.30 = 87,115.20 : x
  2. Step 2: Convert to fraction form
    158,732.64/219,055.30 = 87,115.20/x
  3. Step 3: Cross multiply
    158,732.64x = 219,055.30 × 87,115.20
  4. Step 4: Simplify right side
    158,732.64x = 19,083,046,270.56
  5. Step 5: Solve for x
    x = 19,083,046,270.56/158,732.64
  6. Step 6: Final answer
    x = 120,221.31

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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.