Home / 156,921.52-216,551.79-85,301.54

Finding the Fourth Proportional to 156,921.52, 216,551.79 and 85,301.54

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Solution

The fourth proportional to 156,921.52, 216,551.79 and 85,301.54 is: 117,716.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,921.52 : 216,551.79 = 85,301.54 : x
  2. Step 2: Convert to fraction form
    156,921.52/216,551.79 = 85,301.54/x
  3. Step 3: Cross multiply
    156,921.52x = 216,551.79 × 85,301.54
  4. Step 4: Simplify right side
    156,921.52x = 18,472,201,399.80
  5. Step 5: Solve for x
    x = 18,472,201,399.80/156,921.52
  6. Step 6: Final answer
    x = 117,716.18

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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.