Home / 200,076,419.20-300,039,979.20-78,882,793.60

Finding the Fourth Proportional to 200,076,419.20, 300,039,979.20 and 78,882,793.60

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Solution

The fourth proportional to 200,076,419.20, 300,039,979.20 and 78,882,793.60 is: 118,294,758.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,076,419.20 : 300,039,979.20 = 78,882,793.60 : x
  2. Step 2: Convert to fraction form
    200,076,419.20/300,039,979.20 = 78,882,793.60/x
  3. Step 3: Cross multiply
    200,076,419.20x = 300,039,979.20 × 78,882,793.60
  4. Step 4: Simplify right side
    200,076,419.20x = 23,667,991,750,981,892
  5. Step 5: Solve for x
    x = 23,667,991,750,981,892/200,076,419.20
  6. Step 6: Final answer
    x = 118,294,758.80

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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.