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Finding the Fourth Proportional to 101,712.72, 140,313.69 and 88,265.10

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Solution

The fourth proportional to 101,712.72, 140,313.69 and 88,265.10 is: 121,762.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,712.72 : 140,313.69 = 88,265.10 : x
  2. Step 2: Convert to fraction form
    101,712.72/140,313.69 = 88,265.10/x
  3. Step 3: Cross multiply
    101,712.72x = 140,313.69 × 88,265.10
  4. Step 4: Simplify right side
    101,712.72x = 12,384,801,879.22
  5. Step 5: Solve for x
    x = 12,384,801,879.22/101,712.72
  6. Step 6: Final answer
    x = 121,762.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.