Home / 135,105.14-186,432.96-77,729.24

Finding the Fourth Proportional to 135,105.14, 186,432.96 and 77,729.24

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Solution

The fourth proportional to 135,105.14, 186,432.96 and 77,729.24 is: 107,259.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,105.14 : 186,432.96 = 77,729.24 : x
  2. Step 2: Convert to fraction form
    135,105.14/186,432.96 = 77,729.24/x
  3. Step 3: Cross multiply
    135,105.14x = 186,432.96 × 77,729.24
  4. Step 4: Simplify right side
    135,105.14x = 14,491,292,291.75
  5. Step 5: Solve for x
    x = 14,491,292,291.75/135,105.14
  6. Step 6: Final answer
    x = 107,259.37

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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.