Home / 143,730.36-198,347.94-80,072.28

Finding the Fourth Proportional to 143,730.36, 198,347.94 and 80,072.28

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Solution

The fourth proportional to 143,730.36, 198,347.94 and 80,072.28 is: 110,499.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,730.36 : 198,347.94 = 80,072.28 : x
  2. Step 2: Convert to fraction form
    143,730.36/198,347.94 = 80,072.28/x
  3. Step 3: Cross multiply
    143,730.36x = 198,347.94 × 80,072.28
  4. Step 4: Simplify right side
    143,730.36x = 15,882,171,789.10
  5. Step 5: Solve for x
    x = 15,882,171,789.10/143,730.36
  6. Step 6: Final answer
    x = 110,499.77

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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.