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Finding the Fourth Proportional to 101,629.36, 152,253.96 and 90,647.92

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Solution

The fourth proportional to 101,629.36, 152,253.96 and 90,647.92 is: 135,802.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,629.36 : 152,253.96 = 90,647.92 : x
  2. Step 2: Convert to fraction form
    101,629.36/152,253.96 = 90,647.92/x
  3. Step 3: Cross multiply
    101,629.36x = 152,253.96 × 90,647.92
  4. Step 4: Simplify right side
    101,629.36x = 13,801,504,785.76
  5. Step 5: Solve for x
    x = 13,801,504,785.76/101,629.36
  6. Step 6: Final answer
    x = 135,802.34

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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.