Home / 128,414,903.10-192,622,354.65-82,498,400.70

Finding the Fourth Proportional to 128,414,903.10, 192,622,354.65 and 82,498,400.70

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Solution

The fourth proportional to 128,414,903.10, 192,622,354.65 and 82,498,400.70 is: 123,747,601.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,414,903.10 : 192,622,354.65 = 82,498,400.70 : x
  2. Step 2: Convert to fraction form
    128,414,903.10/192,622,354.65 = 82,498,400.70/x
  3. Step 3: Cross multiply
    128,414,903.10x = 192,622,354.65 × 82,498,400.70
  4. Step 4: Simplify right side
    128,414,903.10x = 15,891,036,197,693,210
  5. Step 5: Solve for x
    x = 15,891,036,197,693,210/128,414,903.10
  6. Step 6: Final answer
    x = 123,747,601.05

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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.