Home / 156,371.09-215,791.20-84,751.11

Finding the Fourth Proportional to 156,371.09, 215,791.20 and 84,751.11

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Solution

The fourth proportional to 156,371.09, 215,791.20 and 84,751.11 is: 116,956.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,371.09 : 215,791.20 = 84,751.11 : x
  2. Step 2: Convert to fraction form
    156,371.09/215,791.20 = 84,751.11/x
  3. Step 3: Cross multiply
    156,371.09x = 215,791.20 × 84,751.11
  4. Step 4: Simplify right side
    156,371.09x = 18,288,543,728.23
  5. Step 5: Solve for x
    x = 18,288,543,728.23/156,371.09
  6. Step 6: Final answer
    x = 116,956.05

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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.