Home / 136,936.40-205,433.40-77,723.60

Finding the Fourth Proportional to 136,936.40, 205,433.40 and 77,723.60

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Solution

The fourth proportional to 136,936.40, 205,433.40 and 77,723.60 is: 116,601.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,936.40 : 205,433.40 = 77,723.60 : x
  2. Step 2: Convert to fraction form
    136,936.40/205,433.40 = 77,723.60/x
  3. Step 3: Cross multiply
    136,936.40x = 205,433.40 × 77,723.60
  4. Step 4: Simplify right side
    136,936.40x = 15,967,023,408.24
  5. Step 5: Solve for x
    x = 15,967,023,408.24/136,936.40
  6. Step 6: Final answer
    x = 116,601.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.