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Finding the Fourth Proportional to 101,592, 140,201.28 and 59,143.68

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Solution

The fourth proportional to 101,592, 140,201.28 and 59,143.68 is: 81,620.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,592 : 140,201.28 = 59,143.68 : x
  2. Step 2: Convert to fraction form
    101,592/140,201.28 = 59,143.68/x
  3. Step 3: Cross multiply
    101,592x = 140,201.28 × 59,143.68
  4. Step 4: Simplify right side
    101,592x = 8,292,019,639.91
  5. Step 5: Solve for x
    x = 8,292,019,639.91/101,592
  6. Step 6: Final answer
    x = 81,620.79

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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.