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Finding the Fourth Proportional to 200,712.80, 301,069.20 and 126,063.20

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Solution

The fourth proportional to 200,712.80, 301,069.20 and 126,063.20 is: 189,094.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,712.80 : 301,069.20 = 126,063.20 : x
  2. Step 2: Convert to fraction form
    200,712.80/301,069.20 = 126,063.20/x
  3. Step 3: Cross multiply
    200,712.80x = 301,069.20 × 126,063.20
  4. Step 4: Simplify right side
    200,712.80x = 37,953,746,773.44
  5. Step 5: Solve for x
    x = 37,953,746,773.44/200,712.80
  6. Step 6: Final answer
    x = 189,094.80

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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.