Home / 143,037.67-197,401.23-79,375.47

Finding the Fourth Proportional to 143,037.67, 197,401.23 and 79,375.47

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Solution

The fourth proportional to 143,037.67, 197,401.23 and 79,375.47 is: 109,543.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,037.67 : 197,401.23 = 79,375.47 : x
  2. Step 2: Convert to fraction form
    143,037.67/197,401.23 = 79,375.47/x
  3. Step 3: Cross multiply
    143,037.67x = 197,401.23 × 79,375.47
  4. Step 4: Simplify right side
    143,037.67x = 15,668,815,001.52
  5. Step 5: Solve for x
    x = 15,668,815,001.52/143,037.67
  6. Step 6: Final answer
    x = 109,543.27

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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.