Home / 138,268.62-190,814.39-77,841.56

Finding the Fourth Proportional to 138,268.62, 190,814.39 and 77,841.56

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Solution

The fourth proportional to 138,268.62, 190,814.39 and 77,841.56 is: 107,423.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,268.62 : 190,814.39 = 77,841.56 : x
  2. Step 2: Convert to fraction form
    138,268.62/190,814.39 = 77,841.56/x
  3. Step 3: Cross multiply
    138,268.62x = 190,814.39 × 77,841.56
  4. Step 4: Simplify right side
    138,268.62x = 14,853,289,744.13
  5. Step 5: Solve for x
    x = 14,853,289,744.13/138,268.62
  6. Step 6: Final answer
    x = 107,423.43

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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.