Home / 143,341.45-197,814.99-78,813.38

Finding the Fourth Proportional to 143,341.45, 197,814.99 and 78,813.38

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Solution

The fourth proportional to 143,341.45, 197,814.99 and 78,813.38 is: 108,764.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,341.45 : 197,814.99 = 78,813.38 : x
  2. Step 2: Convert to fraction form
    143,341.45/197,814.99 = 78,813.38/x
  3. Step 3: Cross multiply
    143,341.45x = 197,814.99 × 78,813.38
  4. Step 4: Simplify right side
    143,341.45x = 15,590,467,976.57
  5. Step 5: Solve for x
    x = 15,590,467,976.57/143,341.45
  6. Step 6: Final answer
    x = 108,764.55

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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.