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Finding the Fourth Proportional to 136,884.54, 205,359.80 and 43,390.29

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Solution

The fourth proportional to 136,884.54, 205,359.80 and 43,390.29 is: 65,095.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,884.54 : 205,359.80 = 43,390.29 : x
  2. Step 2: Convert to fraction form
    136,884.54/205,359.80 = 43,390.29/x
  3. Step 3: Cross multiply
    136,884.54x = 205,359.80 × 43,390.29
  4. Step 4: Simplify right side
    136,884.54x = 8,910,621,059.39
  5. Step 5: Solve for x
    x = 8,910,621,059.39/136,884.54
  6. Step 6: Final answer
    x = 65,095.89

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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.