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Finding the Fourth Proportional to 188,999.92, 260,801.94 and 108,434.08

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Solution

The fourth proportional to 188,999.92, 260,801.94 and 108,434.08 is: 149,628.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,999.92 : 260,801.94 = 108,434.08 : x
  2. Step 2: Convert to fraction form
    188,999.92/260,801.94 = 108,434.08/x
  3. Step 3: Cross multiply
    188,999.92x = 260,801.94 × 108,434.08
  4. Step 4: Simplify right side
    188,999.92x = 28,279,818,426.12
  5. Step 5: Solve for x
    x = 28,279,818,426.12/188,999.92
  6. Step 6: Final answer
    x = 149,628.73

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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.