Home / 143,135.00-197,518.56-79,468.70

Finding the Fourth Proportional to 143,135.00, 197,518.56 and 79,468.70

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Solution

The fourth proportional to 143,135.00, 197,518.56 and 79,468.70 is: 109,662.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,135.00 : 197,518.56 = 79,468.70 : x
  2. Step 2: Convert to fraction form
    143,135.00/197,518.56 = 79,468.70/x
  3. Step 3: Cross multiply
    143,135.00x = 197,518.56 × 79,468.70
  4. Step 4: Simplify right side
    143,135.00x = 15,696,542,201.48
  5. Step 5: Solve for x
    x = 15,696,542,201.48/143,135.00
  6. Step 6: Final answer
    x = 109,662.51

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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.