Home / 143,357.13-197,844.81-79,700.85

Finding the Fourth Proportional to 143,357.13, 197,844.81 and 79,700.85

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Solution

The fourth proportional to 143,357.13, 197,844.81 and 79,700.85 is: 109,993.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,357.13 : 197,844.81 = 79,700.85 : x
  2. Step 2: Convert to fraction form
    143,357.13/197,844.81 = 79,700.85/x
  3. Step 3: Cross multiply
    143,357.13x = 197,844.81 × 79,700.85
  4. Step 4: Simplify right side
    143,357.13x = 15,768,399,525.09
  5. Step 5: Solve for x
    x = 15,768,399,525.09/143,357.13
  6. Step 6: Final answer
    x = 109,993.83

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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.