Home / 143,981,578.76-198,638,042.04-83,620,296.88

Finding the Fourth Proportional to 143,981,578.76, 198,638,042.04 and 83,620,296.88

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Solution

The fourth proportional to 143,981,578.76, 198,638,042.04 and 83,620,296.88 is: 115,363,174.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,981,578.76 : 198,638,042.04 = 83,620,296.88 : x
  2. Step 2: Convert to fraction form
    143,981,578.76/198,638,042.04 = 83,620,296.88/x
  3. Step 3: Cross multiply
    143,981,578.76x = 198,638,042.04 × 83,620,296.88
  4. Step 4: Simplify right side
    143,981,578.76x = 16,610,172,046,759,176
  5. Step 5: Solve for x
    x = 16,610,172,046,759,176/143,981,578.76
  6. Step 6: Final answer
    x = 115,363,174.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.