Home / 143,563.48-198,115.62-79,901.30

Finding the Fourth Proportional to 143,563.48, 198,115.62 and 79,901.30

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Solution

The fourth proportional to 143,563.48, 198,115.62 and 79,901.30 is: 110,262.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,563.48 : 198,115.62 = 79,901.30 : x
  2. Step 2: Convert to fraction form
    143,563.48/198,115.62 = 79,901.30/x
  3. Step 3: Cross multiply
    143,563.48x = 198,115.62 × 79,901.30
  4. Step 4: Simplify right side
    143,563.48x = 15,829,695,588.31
  5. Step 5: Solve for x
    x = 15,829,695,588.31/143,563.48
  6. Step 6: Final answer
    x = 110,262.69

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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.