Home / 99,621,903.20-149,432,854.80-82,615,791.20

Finding the Fourth Proportional to 99,621,903.20, 149,432,854.80 and 82,615,791.20

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Solution

The fourth proportional to 99,621,903.20, 149,432,854.80 and 82,615,791.20 is: 123,923,686.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,621,903.20 : 149,432,854.80 = 82,615,791.20 : x
  2. Step 2: Convert to fraction form
    99,621,903.20/149,432,854.80 = 82,615,791.20/x
  3. Step 3: Cross multiply
    99,621,903.20x = 149,432,854.80 × 82,615,791.20
  4. Step 4: Simplify right side
    99,621,903.20x = 12,345,513,530,576,720
  5. Step 5: Solve for x
    x = 12,345,513,530,576,720/99,621,903.20
  6. Step 6: Final answer
    x = 123,923,686.80

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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.