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Finding the Fourth Proportional to 135,302.69, 186,714.91 and 74,873.29

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Solution

The fourth proportional to 135,302.69, 186,714.91 and 74,873.29 is: 103,323.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,302.69 : 186,714.91 = 74,873.29 : x
  2. Step 2: Convert to fraction form
    135,302.69/186,714.91 = 74,873.29/x
  3. Step 3: Cross multiply
    135,302.69x = 186,714.91 × 74,873.29
  4. Step 4: Simplify right side
    135,302.69x = 13,979,958,949.78
  5. Step 5: Solve for x
    x = 13,979,958,949.78/135,302.69
  6. Step 6: Final answer
    x = 103,323.59

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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.