Home / 143,020.57-197,368.38-79,358.83

Finding the Fourth Proportional to 143,020.57, 197,368.38 and 79,358.83

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Solution

The fourth proportional to 143,020.57, 197,368.38 and 79,358.83 is: 109,515.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,020.57 : 197,368.38 = 79,358.83 : x
  2. Step 2: Convert to fraction form
    143,020.57/197,368.38 = 79,358.83/x
  3. Step 3: Cross multiply
    143,020.57x = 197,368.38 × 79,358.83
  4. Step 4: Simplify right side
    143,020.57x = 15,662,923,715.80
  5. Step 5: Solve for x
    x = 15,662,923,715.80/143,020.57
  6. Step 6: Final answer
    x = 109,515.18

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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.