Home / 143,200.76-197,611.52-79,542.59

Finding the Fourth Proportional to 143,200.76, 197,611.52 and 79,542.59

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Solution

The fourth proportional to 143,200.76, 197,611.52 and 79,542.59 is: 109,765.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,200.76 : 197,611.52 = 79,542.59 : x
  2. Step 2: Convert to fraction form
    143,200.76/197,611.52 = 79,542.59/x
  3. Step 3: Cross multiply
    143,200.76x = 197,611.52 × 79,542.59
  4. Step 4: Simplify right side
    143,200.76x = 15,718,530,728.87
  5. Step 5: Solve for x
    x = 15,718,530,728.87/143,200.76
  6. Step 6: Final answer
    x = 109,765.70

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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.