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Finding the Fourth Proportional to 144,954.84, 217,494.87 and 78,441.93

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Solution

The fourth proportional to 144,954.84, 217,494.87 and 78,441.93 is: 117,696.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,954.84 : 217,494.87 = 78,441.93 : x
  2. Step 2: Convert to fraction form
    144,954.84/217,494.87 = 78,441.93/x
  3. Step 3: Cross multiply
    144,954.84x = 217,494.87 × 78,441.93
  4. Step 4: Simplify right side
    144,954.84x = 17,060,717,367.90
  5. Step 5: Solve for x
    x = 17,060,717,367.90/144,954.84
  6. Step 6: Final answer
    x = 117,696.78

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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.