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Finding the Fourth Proportional to 183,712.62, 253,503.81 and 103,149

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Solution

The fourth proportional to 183,712.62, 253,503.81 and 103,149 is: 142,334.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    183,712.62 : 253,503.81 = 103,149 : x
  2. Step 2: Convert to fraction form
    183,712.62/253,503.81 = 103,149/x
  3. Step 3: Cross multiply
    183,712.62x = 253,503.81 × 103,149
  4. Step 4: Simplify right side
    183,712.62x = 26,148,664,497.69
  5. Step 5: Solve for x
    x = 26,148,664,497.69/183,712.62
  6. Step 6: Final answer
    x = 142,334.61

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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.