Home / 143,986.14-198,740.40-83,576.25

Finding the Fourth Proportional to 143,986.14, 198,740.40 and 83,576.25

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Solution

The fourth proportional to 143,986.14, 198,740.40 and 83,576.25 is: 115,358.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,986.14 : 198,740.40 = 83,576.25 : x
  2. Step 2: Convert to fraction form
    143,986.14/198,740.40 = 83,576.25/x
  3. Step 3: Cross multiply
    143,986.14x = 198,740.40 × 83,576.25
  4. Step 4: Simplify right side
    143,986.14x = 16,609,975,943.92
  5. Step 5: Solve for x
    x = 16,609,975,943.92/143,986.14
  6. Step 6: Final answer
    x = 115,358.16

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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.