Home / 156,725.11-216,274.66-85,103.56

Finding the Fourth Proportional to 156,725.11, 216,274.66 and 85,103.56

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Solution

The fourth proportional to 156,725.11, 216,274.66 and 85,103.56 is: 117,439.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,725.11 : 216,274.66 = 85,103.56 : x
  2. Step 2: Convert to fraction form
    156,725.11/216,274.66 = 85,103.56/x
  3. Step 3: Cross multiply
    156,725.11x = 216,274.66 × 85,103.56
  4. Step 4: Simplify right side
    156,725.11x = 18,405,743,503.79
  5. Step 5: Solve for x
    x = 18,405,743,503.79/156,725.11
  6. Step 6: Final answer
    x = 117,439.66

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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.