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Finding the Fourth Proportional to 161,780.80, 242,815.20 and 95,137.60

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Solution

The fourth proportional to 161,780.80, 242,815.20 and 95,137.60 is: 142,791.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,780.80 : 242,815.20 = 95,137.60 : x
  2. Step 2: Convert to fraction form
    161,780.80/242,815.20 = 95,137.60/x
  3. Step 3: Cross multiply
    161,780.80x = 242,815.20 × 95,137.60
  4. Step 4: Simplify right side
    161,780.80x = 23,100,855,371.52
  5. Step 5: Solve for x
    x = 23,100,855,371.52/161,780.80
  6. Step 6: Final answer
    x = 142,791.08

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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.