Home / 143,131.95-197,528.26-79,469.75

Finding the Fourth Proportional to 143,131.95, 197,528.26 and 79,469.75

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Solution

The fourth proportional to 143,131.95, 197,528.26 and 79,469.75 is: 109,671.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,131.95 : 197,528.26 = 79,469.75 : x
  2. Step 2: Convert to fraction form
    143,131.95/197,528.26 = 79,469.75/x
  3. Step 3: Cross multiply
    143,131.95x = 197,528.26 × 79,469.75
  4. Step 4: Simplify right side
    143,131.95x = 15,697,521,440.14
  5. Step 5: Solve for x
    x = 15,697,521,440.14/143,131.95
  6. Step 6: Final answer
    x = 109,671.68

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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.