Home / 100,943.56-151,243.12-71,304.36

Finding the Fourth Proportional to 100,943.56, 151,243.12 and 71,304.36

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Solution

The fourth proportional to 100,943.56, 151,243.12 and 71,304.36 is: 106,834.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,943.56 : 151,243.12 = 71,304.36 : x
  2. Step 2: Convert to fraction form
    100,943.56/151,243.12 = 71,304.36/x
  3. Step 3: Cross multiply
    100,943.56x = 151,243.12 × 71,304.36
  4. Step 4: Simplify right side
    100,943.56x = 10,784,293,876.00
  5. Step 5: Solve for x
    x = 10,784,293,876.00/100,943.56
  6. Step 6: Final answer
    x = 106,834.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.