Home / 143,401.36-197,896.38-78,877.57

Finding the Fourth Proportional to 143,401.36, 197,896.38 and 78,877.57

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Solution

The fourth proportional to 143,401.36, 197,896.38 and 78,877.57 is: 108,852.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,401.36 : 197,896.38 = 78,877.57 : x
  2. Step 2: Convert to fraction form
    143,401.36/197,896.38 = 78,877.57/x
  3. Step 3: Cross multiply
    143,401.36x = 197,896.38 × 78,877.57
  4. Step 4: Simplify right side
    143,401.36x = 15,609,584,775.66
  5. Step 5: Solve for x
    x = 15,609,584,775.66/143,401.36
  6. Step 6: Final answer
    x = 108,852.42

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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.