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Finding the Fourth Proportional to 207,879.14, 286,873.24 and 112,385.81

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Solution

The fourth proportional to 207,879.14, 286,873.24 and 112,385.81 is: 155,092.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,879.14 : 286,873.24 = 112,385.81 : x
  2. Step 2: Convert to fraction form
    207,879.14/286,873.24 = 112,385.81/x
  3. Step 3: Cross multiply
    207,879.14x = 286,873.24 × 112,385.81
  4. Step 4: Simplify right side
    207,879.14x = 32,240,481,444.72
  5. Step 5: Solve for x
    x = 32,240,481,444.72/207,879.14
  6. Step 6: Final answer
    x = 155,092.43

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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.