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Finding the Fourth Proportional to 200,910.92, 301,412.41 and 87,077.84

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Solution

The fourth proportional to 200,910.92, 301,412.41 and 87,077.84 is: 130,636.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,910.92 : 301,412.41 = 87,077.84 : x
  2. Step 2: Convert to fraction form
    200,910.92/301,412.41 = 87,077.84/x
  3. Step 3: Cross multiply
    200,910.92x = 301,412.41 × 87,077.84
  4. Step 4: Simplify right side
    200,910.92x = 26,246,339,887.24
  5. Step 5: Solve for x
    x = 26,246,339,887.24/200,910.92
  6. Step 6: Final answer
    x = 130,636.70

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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.