Home / 144,815.85-199,834.97-81,141.35

Finding the Fourth Proportional to 144,815.85, 199,834.97 and 81,141.35

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Solution

The fourth proportional to 144,815.85, 199,834.97 and 81,141.35 is: 111,968.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,815.85 : 199,834.97 = 81,141.35 : x
  2. Step 2: Convert to fraction form
    144,815.85/199,834.97 = 81,141.35/x
  3. Step 3: Cross multiply
    144,815.85x = 199,834.97 × 81,141.35
  4. Step 4: Simplify right side
    144,815.85x = 16,214,877,838.13
  5. Step 5: Solve for x
    x = 16,214,877,838.13/144,815.85
  6. Step 6: Final answer
    x = 111,968.94

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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.