Home / 12,780,142.20-19,163,214.90-5,198,542.20

Finding the Fourth Proportional to 12,780,142.20, 19,163,214.90 and 5,198,542.20

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Solution

The fourth proportional to 12,780,142.20, 19,163,214.90 and 5,198,542.20 is: 7,794,966.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,780,142.20 : 19,163,214.90 = 5,198,542.20 : x
  2. Step 2: Convert to fraction form
    12,780,142.20/19,163,214.90 = 5,198,542.20/x
  3. Step 3: Cross multiply
    12,780,142.20x = 19,163,214.90 × 5,198,542.20
  4. Step 4: Simplify right side
    12,780,142.20x = 99,620,781,345,318.78
  5. Step 5: Solve for x
    x = 99,620,781,345,318.78/12,780,142.20
  6. Step 6: Final answer
    x = 7,794,966.58

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1.5x scale

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.