Home / 143,419.38-197,916.12-79,756.62

Finding the Fourth Proportional to 143,419.38, 197,916.12 and 79,756.62

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Solution

The fourth proportional to 143,419.38, 197,916.12 and 79,756.62 is: 110,062.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,419.38 : 197,916.12 = 79,756.62 : x
  2. Step 2: Convert to fraction form
    143,419.38/197,916.12 = 79,756.62/x
  3. Step 3: Cross multiply
    143,419.38x = 197,916.12 × 79,756.62
  4. Step 4: Simplify right side
    143,419.38x = 15,785,120,774.71
  5. Step 5: Solve for x
    x = 15,785,120,774.71/143,419.38
  6. Step 6: Final answer
    x = 110,062.68

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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.