Home / 143,206.89-197,631.76-79,544.68

Finding the Fourth Proportional to 143,206.89, 197,631.76 and 79,544.68

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Solution

The fourth proportional to 143,206.89, 197,631.76 and 79,544.68 is: 109,775.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,206.89 : 197,631.76 = 79,544.68 : x
  2. Step 2: Convert to fraction form
    143,206.89/197,631.76 = 79,544.68/x
  3. Step 3: Cross multiply
    143,206.89x = 197,631.76 × 79,544.68
  4. Step 4: Simplify right side
    143,206.89x = 15,720,555,179.30
  5. Step 5: Solve for x
    x = 15,720,555,179.30/143,206.89
  6. Step 6: Final answer
    x = 109,775.14

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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.