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Finding the Fourth Proportional to 136,688.63, 205,039.12 and 41,911.89

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Solution

The fourth proportional to 136,688.63, 205,039.12 and 41,911.89 is: 62,869.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,688.63 : 205,039.12 = 41,911.89 : x
  2. Step 2: Convert to fraction form
    136,688.63/205,039.12 = 41,911.89/x
  3. Step 3: Cross multiply
    136,688.63x = 205,039.12 × 41,911.89
  4. Step 4: Simplify right side
    136,688.63x = 8,593,577,043.14
  5. Step 5: Solve for x
    x = 8,593,577,043.14/136,688.63
  6. Step 6: Final answer
    x = 62,869.73

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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.