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Finding the Fourth Proportional to 100,696.34, 151,044.52 and 47,945.90

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Solution

The fourth proportional to 100,696.34, 151,044.52 and 47,945.90 is: 71,918.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,696.34 : 151,044.52 = 47,945.90 : x
  2. Step 2: Convert to fraction form
    100,696.34/151,044.52 = 47,945.90/x
  3. Step 3: Cross multiply
    100,696.34x = 151,044.52 × 47,945.90
  4. Step 4: Simplify right side
    100,696.34x = 7,241,965,509.15
  5. Step 5: Solve for x
    x = 7,241,965,509.15/100,696.34
  6. Step 6: Final answer
    x = 71,918.86

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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.