Home / 143,061.12-197,431.08-79,399.44

Finding the Fourth Proportional to 143,061.12, 197,431.08 and 79,399.44

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Solution

The fourth proportional to 143,061.12, 197,431.08 and 79,399.44 is: 109,574.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,061.12 : 197,431.08 = 79,399.44 : x
  2. Step 2: Convert to fraction form
    143,061.12/197,431.08 = 79,399.44/x
  3. Step 3: Cross multiply
    143,061.12x = 197,431.08 × 79,399.44
  4. Step 4: Simplify right side
    143,061.12x = 15,675,917,190.60
  5. Step 5: Solve for x
    x = 15,675,917,190.60/143,061.12
  6. Step 6: Final answer
    x = 109,574.96

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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.