Home / 143,028.32-197,379.12-79,376.36

Finding the Fourth Proportional to 143,028.32, 197,379.12 and 79,376.36

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Solution

The fourth proportional to 143,028.32, 197,379.12 and 79,376.36 is: 109,539.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,028.32 : 197,379.12 = 79,376.36 : x
  2. Step 2: Convert to fraction form
    143,028.32/197,379.12 = 79,376.36/x
  3. Step 3: Cross multiply
    143,028.32x = 197,379.12 × 79,376.36
  4. Step 4: Simplify right side
    143,028.32x = 15,667,236,085.60
  5. Step 5: Solve for x
    x = 15,667,236,085.60/143,028.32
  6. Step 6: Final answer
    x = 109,539.40

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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.