Home / 143,699.45-198,305.29-83,305.10

Finding the Fourth Proportional to 143,699.45, 198,305.29 and 83,305.10

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Solution

The fourth proportional to 143,699.45, 198,305.29 and 83,305.10 is: 114,961.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,699.45 : 198,305.29 = 83,305.10 : x
  2. Step 2: Convert to fraction form
    143,699.45/198,305.29 = 83,305.10/x
  3. Step 3: Cross multiply
    143,699.45x = 198,305.29 × 83,305.10
  4. Step 4: Simplify right side
    143,699.45x = 16,519,842,613.87
  5. Step 5: Solve for x
    x = 16,519,842,613.87/143,699.45
  6. Step 6: Final answer
    x = 114,961.07

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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.