Home / 143,661.63-198,253.05-83,267.31

Finding the Fourth Proportional to 143,661.63, 198,253.05 and 83,267.31

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Solution

The fourth proportional to 143,661.63, 198,253.05 and 83,267.31 is: 114,908.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,661.63 : 198,253.05 = 83,267.31 : x
  2. Step 2: Convert to fraction form
    143,661.63/198,253.05 = 83,267.31/x
  3. Step 3: Cross multiply
    143,661.63x = 198,253.05 × 83,267.31
  4. Step 4: Simplify right side
    143,661.63x = 16,507,998,172.80
  5. Step 5: Solve for x
    x = 16,507,998,172.80/143,661.63
  6. Step 6: Final answer
    x = 114,908.89

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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.