Home / 156,921.78-235,249.92-68,108.52

Finding the Fourth Proportional to 156,921.78, 235,249.92 and 68,108.52

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Solution

The fourth proportional to 156,921.78, 235,249.92 and 68,108.52 is: 102,105.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,921.78 : 235,249.92 = 68,108.52 : x
  2. Step 2: Convert to fraction form
    156,921.78/235,249.92 = 68,108.52/x
  3. Step 3: Cross multiply
    156,921.78x = 235,249.92 × 68,108.52
  4. Step 4: Simplify right side
    156,921.78x = 16,022,523,881.32
  5. Step 5: Solve for x
    x = 16,022,523,881.32/156,921.78
  6. Step 6: Final answer
    x = 102,105.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.