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Finding the Fourth Proportional to 112,290.92, 154,952.16 and 63,879.97

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Solution

The fourth proportional to 112,290.92, 154,952.16 and 63,879.97 is: 88,149.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,290.92 : 154,952.16 = 63,879.97 : x
  2. Step 2: Convert to fraction form
    112,290.92/154,952.16 = 63,879.97/x
  3. Step 3: Cross multiply
    112,290.92x = 154,952.16 × 63,879.97
  4. Step 4: Simplify right side
    112,290.92x = 9,898,338,238.07
  5. Step 5: Solve for x
    x = 9,898,338,238.07/112,290.92
  6. Step 6: Final answer
    x = 88,149.05

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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.