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Finding the Fourth Proportional to 136,838.48, 188,837.96 and 80,250.96

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Solution

The fourth proportional to 136,838.48, 188,837.96 and 80,250.96 is: 110,746.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,838.48 : 188,837.96 = 80,250.96 : x
  2. Step 2: Convert to fraction form
    136,838.48/188,837.96 = 80,250.96/x
  3. Step 3: Cross multiply
    136,838.48x = 188,837.96 × 80,250.96
  4. Step 4: Simplify right side
    136,838.48x = 15,154,427,574.44
  5. Step 5: Solve for x
    x = 15,154,427,574.44/136,838.48
  6. Step 6: Final answer
    x = 110,746.83

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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.