Home / 156,378.33-215,796.29-84,756.78

Finding the Fourth Proportional to 156,378.33, 215,796.29 and 84,756.78

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Solution

The fourth proportional to 156,378.33, 215,796.29 and 84,756.78 is: 116,961.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,378.33 : 215,796.29 = 84,756.78 : x
  2. Step 2: Convert to fraction form
    156,378.33/215,796.29 = 84,756.78/x
  3. Step 3: Cross multiply
    156,378.33x = 215,796.29 × 84,756.78
  4. Step 4: Simplify right side
    156,378.33x = 18,290,198,252.56
  5. Step 5: Solve for x
    x = 18,290,198,252.56/156,378.33
  6. Step 6: Final answer
    x = 116,961.21

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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.