Home / 143,018.82-197,366.09-79,356.58

Finding the Fourth Proportional to 143,018.82, 197,366.09 and 79,356.58

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Solution

The fourth proportional to 143,018.82, 197,366.09 and 79,356.58 is: 109,512.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,018.82 : 197,366.09 = 79,356.58 : x
  2. Step 2: Convert to fraction form
    143,018.82/197,366.09 = 79,356.58/x
  3. Step 3: Cross multiply
    143,018.82x = 197,366.09 × 79,356.58
  4. Step 4: Simplify right side
    143,018.82x = 15,662,297,020.17
  5. Step 5: Solve for x
    x = 15,662,297,020.17/143,018.82
  6. Step 6: Final answer
    x = 109,512.14

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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.