Home / 156,046.08-234,067.88-81,127.56

Finding the Fourth Proportional to 156,046.08, 234,067.88 and 81,127.56

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Solution

The fourth proportional to 156,046.08, 234,067.88 and 81,127.56 is: 121,690.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,046.08 : 234,067.88 = 81,127.56 : x
  2. Step 2: Convert to fraction form
    156,046.08/234,067.88 = 81,127.56/x
  3. Step 3: Cross multiply
    156,046.08x = 234,067.88 × 81,127.56
  4. Step 4: Simplify right side
    156,046.08x = 18,989,355,978.77
  5. Step 5: Solve for x
    x = 18,989,355,978.77/156,046.08
  6. Step 6: Final answer
    x = 121,690.70

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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.