Home / 143,198.13-197,607.89-79,539.96

Finding the Fourth Proportional to 143,198.13, 197,607.89 and 79,539.96

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Solution

The fourth proportional to 143,198.13, 197,607.89 and 79,539.96 is: 109,762.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,198.13 : 197,607.89 = 79,539.96 : x
  2. Step 2: Convert to fraction form
    143,198.13/197,607.89 = 79,539.96/x
  3. Step 3: Cross multiply
    143,198.13x = 197,607.89 × 79,539.96
  4. Step 4: Simplify right side
    143,198.13x = 15,717,723,865.13
  5. Step 5: Solve for x
    x = 15,717,723,865.13/143,198.13
  6. Step 6: Final answer
    x = 109,762.07

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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.