Home / 143,428.14-197,928.02-79,764.57

Finding the Fourth Proportional to 143,428.14, 197,928.02 and 79,764.57

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Solution

The fourth proportional to 143,428.14, 197,928.02 and 79,764.57 is: 110,073.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,428.14 : 197,928.02 = 79,764.57 : x
  2. Step 2: Convert to fraction form
    143,428.14/197,928.02 = 79,764.57/x
  3. Step 3: Cross multiply
    143,428.14x = 197,928.02 × 79,764.57
  4. Step 4: Simplify right side
    143,428.14x = 15,787,643,605.66
  5. Step 5: Solve for x
    x = 15,787,643,605.66/143,428.14
  6. Step 6: Final answer
    x = 110,073.54

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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.