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Finding the Fourth Proportional to 144,677.10, 199,648.90 and 81,011.71

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Solution

The fourth proportional to 144,677.10, 199,648.90 and 81,011.71 is: 111,793.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,677.10 : 199,648.90 = 81,011.71 : x
  2. Step 2: Convert to fraction form
    144,677.10/199,648.90 = 81,011.71/x
  3. Step 3: Cross multiply
    144,677.10x = 199,648.90 × 81,011.71
  4. Step 4: Simplify right side
    144,677.10x = 16,173,898,788.62
  5. Step 5: Solve for x
    x = 16,173,898,788.62/144,677.10
  6. Step 6: Final answer
    x = 111,793.08

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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.