Home / 143,221.24-197,639.82-79,563.04

Finding the Fourth Proportional to 143,221.24, 197,639.82 and 79,563.04

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Solution

The fourth proportional to 143,221.24, 197,639.82 and 79,563.04 is: 109,793.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,221.24 : 197,639.82 = 79,563.04 : x
  2. Step 2: Convert to fraction form
    143,221.24/197,639.82 = 79,563.04/x
  3. Step 3: Cross multiply
    143,221.24x = 197,639.82 × 79,563.04
  4. Step 4: Simplify right side
    143,221.24x = 15,724,824,904.25
  5. Step 5: Solve for x
    x = 15,724,824,904.25/143,221.24
  6. Step 6: Final answer
    x = 109,793.94

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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.