Home / 135,121.52-186,503.41-77,767.90

Finding the Fourth Proportional to 135,121.52, 186,503.41 and 77,767.90

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Solution

The fourth proportional to 135,121.52, 186,503.41 and 77,767.90 is: 107,340.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,121.52 : 186,503.41 = 77,767.90 : x
  2. Step 2: Convert to fraction form
    135,121.52/186,503.41 = 77,767.90/x
  3. Step 3: Cross multiply
    135,121.52x = 186,503.41 × 77,767.90
  4. Step 4: Simplify right side
    135,121.52x = 14,503,978,169.49
  5. Step 5: Solve for x
    x = 14,503,978,169.49/135,121.52
  6. Step 6: Final answer
    x = 107,340.26

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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.