Home / 211,132.33-291,359.60-120,517

Finding the Fourth Proportional to 211,132.33, 291,359.60 and 120,517

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Solution

The fourth proportional to 211,132.33, 291,359.60 and 120,517 is: 166,311.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,132.33 : 291,359.60 = 120,517 : x
  2. Step 2: Convert to fraction form
    211,132.33/291,359.60 = 120,517/x
  3. Step 3: Cross multiply
    211,132.33x = 291,359.60 × 120,517
  4. Step 4: Simplify right side
    211,132.33x = 35,113,784,913.20
  5. Step 5: Solve for x
    x = 35,113,784,913.20/211,132.33
  6. Step 6: Final answer
    x = 166,311.74

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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.