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Finding the Fourth Proportional to 156,101.01, 215,419.37 and 84,481.04

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Solution

The fourth proportional to 156,101.01, 215,419.37 and 84,481.04 is: 116,583.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,101.01 : 215,419.37 = 84,481.04 : x
  2. Step 2: Convert to fraction form
    156,101.01/215,419.37 = 84,481.04/x
  3. Step 3: Cross multiply
    156,101.01x = 215,419.37 × 84,481.04
  4. Step 4: Simplify right side
    156,101.01x = 18,198,852,413.74
  5. Step 5: Solve for x
    x = 18,198,852,413.74/156,101.01
  6. Step 6: Final answer
    x = 116,583.82

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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.