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Finding the Fourth Proportional to 100,937.40, 151,239.24 and 71,304.36

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Solution

The fourth proportional to 100,937.40, 151,239.24 and 71,304.36 is: 106,838.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,937.40 : 151,239.24 = 71,304.36 : x
  2. Step 2: Convert to fraction form
    100,937.40/151,239.24 = 71,304.36/x
  3. Step 3: Cross multiply
    100,937.40x = 151,239.24 × 71,304.36
  4. Step 4: Simplify right side
    100,937.40x = 10,784,017,215.09
  5. Step 5: Solve for x
    x = 10,784,017,215.09/100,937.40
  6. Step 6: Final answer
    x = 106,838.67

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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.