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Finding the Fourth Proportional to 201,899.25, 278,620.97 and 117,065.52

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Solution

The fourth proportional to 201,899.25, 278,620.97 and 117,065.52 is: 161,550.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,899.25 : 278,620.97 = 117,065.52 : x
  2. Step 2: Convert to fraction form
    201,899.25/278,620.97 = 117,065.52/x
  3. Step 3: Cross multiply
    201,899.25x = 278,620.97 × 117,065.52
  4. Step 4: Simplify right side
    201,899.25x = 32,616,908,150.63
  5. Step 5: Solve for x
    x = 32,616,908,150.63/201,899.25
  6. Step 6: Final answer
    x = 161,550.42

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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.