Home / 143,131.70-197,527.91-79,469.50

Finding the Fourth Proportional to 143,131.70, 197,527.91 and 79,469.50

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Solution

The fourth proportional to 143,131.70, 197,527.91 and 79,469.50 is: 109,671.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,131.70 : 197,527.91 = 79,469.50 : x
  2. Step 2: Convert to fraction form
    143,131.70/197,527.91 = 79,469.50/x
  3. Step 3: Cross multiply
    143,131.70x = 197,527.91 × 79,469.50
  4. Step 4: Simplify right side
    143,131.70x = 15,697,444,243.75
  5. Step 5: Solve for x
    x = 15,697,444,243.75/143,131.70
  6. Step 6: Final answer
    x = 109,671.33

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1.5x scale

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.