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Finding the Fourth Proportional to 136,270.69, 188,053.55 and 75,855.61

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Solution

The fourth proportional to 136,270.69, 188,053.55 and 75,855.61 is: 104,680.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,270.69 : 188,053.55 = 75,855.61 : x
  2. Step 2: Convert to fraction form
    136,270.69/188,053.55 = 75,855.61/x
  3. Step 3: Cross multiply
    136,270.69x = 188,053.55 × 75,855.61
  4. Step 4: Simplify right side
    136,270.69x = 14,264,916,747.92
  5. Step 5: Solve for x
    x = 14,264,916,747.92/136,270.69
  6. Step 6: Final answer
    x = 104,680.74

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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.