Home / 143,829.29-198,485.29-83,435.89

Finding the Fourth Proportional to 143,829.29, 198,485.29 and 83,435.89

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Solution

The fourth proportional to 143,829.29, 198,485.29 and 83,435.89 is: 115,142.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,829.29 : 198,485.29 = 83,435.89 : x
  2. Step 2: Convert to fraction form
    143,829.29/198,485.29 = 83,435.89/x
  3. Step 3: Cross multiply
    143,829.29x = 198,485.29 × 83,435.89
  4. Step 4: Simplify right side
    143,829.29x = 16,560,796,823.06
  5. Step 5: Solve for x
    x = 16,560,796,823.06/143,829.29
  6. Step 6: Final answer
    x = 115,142.03

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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.