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Finding the Fourth Proportional to 144,340.22, 216,706.67 and 81,204.77

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Solution

The fourth proportional to 144,340.22, 216,706.67 and 81,204.77 is: 121,917.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,340.22 : 216,706.67 = 81,204.77 : x
  2. Step 2: Convert to fraction form
    144,340.22/216,706.67 = 81,204.77/x
  3. Step 3: Cross multiply
    144,340.22x = 216,706.67 × 81,204.77
  4. Step 4: Simplify right side
    144,340.22x = 17,597,615,294.82
  5. Step 5: Solve for x
    x = 17,597,615,294.82/144,340.22
  6. Step 6: Final answer
    x = 121,917.61

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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.