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Finding the Fourth Proportional to 135,265.69, 186,726.44 and 80,837.06

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Solution

The fourth proportional to 135,265.69, 186,726.44 and 80,837.06 is: 111,590.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,265.69 : 186,726.44 = 80,837.06 : x
  2. Step 2: Convert to fraction form
    135,265.69/186,726.44 = 80,837.06/x
  3. Step 3: Cross multiply
    135,265.69x = 186,726.44 × 80,837.06
  4. Step 4: Simplify right side
    135,265.69x = 15,094,416,029.68
  5. Step 5: Solve for x
    x = 15,094,416,029.68/135,265.69
  6. Step 6: Final answer
    x = 111,590.87

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1.5x scale

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.