Home / 112,979.13-169,469.67-28,739.38

Finding the Fourth Proportional to 112,979.13, 169,469.67 and 28,739.38

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Solution

The fourth proportional to 112,979.13, 169,469.67 and 28,739.38 is: 43,109.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,979.13 : 169,469.67 = 28,739.38 : x
  2. Step 2: Convert to fraction form
    112,979.13/169,469.67 = 28,739.38/x
  3. Step 3: Cross multiply
    112,979.13x = 169,469.67 × 28,739.38
  4. Step 4: Simplify right side
    112,979.13x = 4,870,452,689.00
  5. Step 5: Solve for x
    x = 4,870,452,689.00/112,979.13
  6. Step 6: Final answer
    x = 43,109.31

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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.