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Finding the Fourth Proportional to 143,321.00, 197,752.79 and 79,657.43

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Solution

The fourth proportional to 143,321.00, 197,752.79 and 79,657.43 is: 109,910.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,321.00 : 197,752.79 = 79,657.43 : x
  2. Step 2: Convert to fraction form
    143,321.00/197,752.79 = 79,657.43/x
  3. Step 3: Cross multiply
    143,321.00x = 197,752.79 × 79,657.43
  4. Step 4: Simplify right side
    143,321.00x = 15,752,478,237.11
  5. Step 5: Solve for x
    x = 15,752,478,237.11/143,321.00
  6. Step 6: Final answer
    x = 109,910.47

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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.