Home / 143,473.10-197,997.62-78,949.71

Finding the Fourth Proportional to 143,473.10, 197,997.62 and 78,949.71

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Solution

The fourth proportional to 143,473.10, 197,997.62 and 78,949.71 is: 108,953.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,473.10 : 197,997.62 = 78,949.71 : x
  2. Step 2: Convert to fraction form
    143,473.10/197,997.62 = 78,949.71/x
  3. Step 3: Cross multiply
    143,473.10x = 197,997.62 × 78,949.71
  4. Step 4: Simplify right side
    143,473.10x = 15,631,854,284.94
  5. Step 5: Solve for x
    x = 15,631,854,284.94/143,473.10
  6. Step 6: Final answer
    x = 108,953.21

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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.