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Finding the Fourth Proportional to 188,951.66, 260,747.94 and 102,908.72

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Solution

The fourth proportional to 188,951.66, 260,747.94 and 102,908.72 is: 142,011.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,951.66 : 260,747.94 = 102,908.72 : x
  2. Step 2: Convert to fraction form
    188,951.66/260,747.94 = 102,908.72/x
  3. Step 3: Cross multiply
    188,951.66x = 260,747.94 × 102,908.72
  4. Step 4: Simplify right side
    188,951.66x = 26,833,236,748.04
  5. Step 5: Solve for x
    x = 26,833,236,748.04/188,951.66
  6. Step 6: Final answer
    x = 142,011.12

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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.