Home / 143,430.14-197,930.78-79,766.57

Finding the Fourth Proportional to 143,430.14, 197,930.78 and 79,766.57

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Solution

The fourth proportional to 143,430.14, 197,930.78 and 79,766.57 is: 110,076.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,430.14 : 197,930.78 = 79,766.57 : x
  2. Step 2: Convert to fraction form
    143,430.14/197,930.78 = 79,766.57/x
  3. Step 3: Cross multiply
    143,430.14x = 197,930.78 × 79,766.57
  4. Step 4: Simplify right side
    143,430.14x = 15,788,259,418.02
  5. Step 5: Solve for x
    x = 15,788,259,418.02/143,430.14
  6. Step 6: Final answer
    x = 110,076.30

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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.