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Finding the Fourth Proportional to 101,203.40, 151,805.10 and 71,654.60

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Solution

The fourth proportional to 101,203.40, 151,805.10 and 71,654.60 is: 107,481.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,203.40 : 151,805.10 = 71,654.60 : x
  2. Step 2: Convert to fraction form
    101,203.40/151,805.10 = 71,654.60/x
  3. Step 3: Cross multiply
    101,203.40x = 151,805.10 × 71,654.60
  4. Step 4: Simplify right side
    101,203.40x = 10,877,533,718.46
  5. Step 5: Solve for x
    x = 10,877,533,718.46/101,203.40
  6. Step 6: Final answer
    x = 107,481.90

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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.