Home / 143,002.89-197,344.01-79,340.54

Finding the Fourth Proportional to 143,002.89, 197,344.01 and 79,340.54

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Solution

The fourth proportional to 143,002.89, 197,344.01 and 79,340.54 is: 109,489.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,002.89 : 197,344.01 = 79,340.54 : x
  2. Step 2: Convert to fraction form
    143,002.89/197,344.01 = 79,340.54/x
  3. Step 3: Cross multiply
    143,002.89x = 197,344.01 × 79,340.54
  4. Step 4: Simplify right side
    143,002.89x = 15,657,379,530.80
  5. Step 5: Solve for x
    x = 15,657,379,530.80/143,002.89
  6. Step 6: Final answer
    x = 109,489.95

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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.