Home / 143,189.75-197,601.86-79,533.47

Finding the Fourth Proportional to 143,189.75, 197,601.86 and 79,533.47

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Solution

The fourth proportional to 143,189.75, 197,601.86 and 79,533.47 is: 109,756.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,189.75 : 197,601.86 = 79,533.47 : x
  2. Step 2: Convert to fraction form
    143,189.75/197,601.86 = 79,533.47/x
  3. Step 3: Cross multiply
    143,189.75x = 197,601.86 × 79,533.47
  4. Step 4: Simplify right side
    143,189.75x = 15,715,961,604.25
  5. Step 5: Solve for x
    x = 15,715,961,604.25/143,189.75
  6. Step 6: Final answer
    x = 109,756.19

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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.