Home / 156,445.92-215,897.04-91,917.81

Finding the Fourth Proportional to 156,445.92, 215,897.04 and 91,917.81

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Solution

The fourth proportional to 156,445.92, 215,897.04 and 91,917.81 is: 126,847.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,445.92 : 215,897.04 = 91,917.81 : x
  2. Step 2: Convert to fraction form
    156,445.92/215,897.04 = 91,917.81/x
  3. Step 3: Cross multiply
    156,445.92x = 215,897.04 × 91,917.81
  4. Step 4: Simplify right side
    156,445.92x = 19,844,783,102.28
  5. Step 5: Solve for x
    x = 19,844,783,102.28/156,445.92
  6. Step 6: Final answer
    x = 126,847.56

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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.