Home / 143,171.82-197,579.51-78,647.04

Finding the Fourth Proportional to 143,171.82, 197,579.51 and 78,647.04

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Solution

The fourth proportional to 143,171.82, 197,579.51 and 78,647.04 is: 108,534.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,171.82 : 197,579.51 = 78,647.04 : x
  2. Step 2: Convert to fraction form
    143,171.82/197,579.51 = 78,647.04/x
  3. Step 3: Cross multiply
    143,171.82x = 197,579.51 × 78,647.04
  4. Step 4: Simplify right side
    143,171.82x = 15,539,043,232.92
  5. Step 5: Solve for x
    x = 15,539,043,232.92/143,171.82
  6. Step 6: Final answer
    x = 108,534.23

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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.