Home / 135,040.20-186,317.56-77,676.52

Finding the Fourth Proportional to 135,040.20, 186,317.56 and 77,676.52

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Solution

The fourth proportional to 135,040.20, 186,317.56 and 77,676.52 is: 107,171.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,040.20 : 186,317.56 = 77,676.52 : x
  2. Step 2: Convert to fraction form
    135,040.20/186,317.56 = 77,676.52/x
  3. Step 3: Cross multiply
    135,040.20x = 186,317.56 × 77,676.52
  4. Step 4: Simplify right side
    135,040.20x = 14,472,499,675.69
  5. Step 5: Solve for x
    x = 14,472,499,675.69/135,040.20
  6. Step 6: Final answer
    x = 107,171.79

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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.