Home / 143,488,006.12-198,011,590.50-78,296,786.92

Finding the Fourth Proportional to 143,488,006.12, 198,011,590.50 and 78,296,786.92

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Solution

The fourth proportional to 143,488,006.12, 198,011,590.50 and 78,296,786.92 is: 108,048,552.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,488,006.12 : 198,011,590.50 = 78,296,786.92 : x
  2. Step 2: Convert to fraction form
    143,488,006.12/198,011,590.50 = 78,296,786.92/x
  3. Step 3: Cross multiply
    143,488,006.12x = 198,011,590.50 × 78,296,786.92
  4. Step 4: Simplify right side
    143,488,006.12x = 15,503,671,309,068,796
  5. Step 5: Solve for x
    x = 15,503,671,309,068,796/143,488,006.12
  6. Step 6: Final answer
    x = 108,048,552.13

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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.