Home / 112,987.06-169,481.58-28,747.30

Finding the Fourth Proportional to 112,987.06, 169,481.58 and 28,747.30

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Solution

The fourth proportional to 112,987.06, 169,481.58 and 28,747.30 is: 43,121.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,987.06 : 169,481.58 = 28,747.30 : x
  2. Step 2: Convert to fraction form
    112,987.06/169,481.58 = 28,747.30/x
  3. Step 3: Cross multiply
    112,987.06x = 169,481.58 × 28,747.30
  4. Step 4: Simplify right side
    112,987.06x = 4,872,137,824.73
  5. Step 5: Solve for x
    x = 4,872,137,824.73/112,987.06
  6. Step 6: Final answer
    x = 43,121.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.