Home / 143,367.77-197,860.13-78,848.37

Finding the Fourth Proportional to 143,367.77, 197,860.13 and 78,848.37

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Solution

The fourth proportional to 143,367.77, 197,860.13 and 78,848.37 is: 108,817.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,367.77 : 197,860.13 = 78,848.37 : x
  2. Step 2: Convert to fraction form
    143,367.77/197,860.13 = 78,848.37/x
  3. Step 3: Cross multiply
    143,367.77x = 197,860.13 × 78,848.37
  4. Step 4: Simplify right side
    143,367.77x = 15,600,948,738.49
  5. Step 5: Solve for x
    x = 15,600,948,738.49/143,367.77
  6. Step 6: Final answer
    x = 108,817.68

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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.