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Finding the Fourth Proportional to 144,785.86, 199,804.35 and 81,124.11

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Solution

The fourth proportional to 144,785.86, 199,804.35 and 81,124.11 is: 111,951.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,785.86 : 199,804.35 = 81,124.11 : x
  2. Step 2: Convert to fraction form
    144,785.86/199,804.35 = 81,124.11/x
  3. Step 3: Cross multiply
    144,785.86x = 199,804.35 × 81,124.11
  4. Step 4: Simplify right side
    144,785.86x = 16,208,950,067.88
  5. Step 5: Solve for x
    x = 16,208,950,067.88/144,785.86
  6. Step 6: Final answer
    x = 111,951.20

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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.