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Finding the Fourth Proportional to 144,615.62, 217,063.71 and 69,788.45

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Solution

The fourth proportional to 144,615.62, 217,063.71 and 69,788.45 is: 104,750.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,615.62 : 217,063.71 = 69,788.45 : x
  2. Step 2: Convert to fraction form
    144,615.62/217,063.71 = 69,788.45/x
  3. Step 3: Cross multiply
    144,615.62x = 217,063.71 × 69,788.45
  4. Step 4: Simplify right side
    144,615.62x = 15,148,538,786.83
  5. Step 5: Solve for x
    x = 15,148,538,786.83/144,615.62
  6. Step 6: Final answer
    x = 104,750.37

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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.