Home / 156,982.15-216,629.44-85,359.70

Finding the Fourth Proportional to 156,982.15, 216,629.44 and 85,359.70

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Solution

The fourth proportional to 156,982.15, 216,629.44 and 85,359.70 is: 117,793.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,982.15 : 216,629.44 = 85,359.70 : x
  2. Step 2: Convert to fraction form
    156,982.15/216,629.44 = 85,359.70/x
  3. Step 3: Cross multiply
    156,982.15x = 216,629.44 × 85,359.70
  4. Step 4: Simplify right side
    156,982.15x = 18,491,424,009.57
  5. Step 5: Solve for x
    x = 18,491,424,009.57/156,982.15
  6. Step 6: Final answer
    x = 117,793.16

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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.