Home / 136,408.37-188,268.86-79,084.71

Finding the Fourth Proportional to 136,408.37, 188,268.86 and 79,084.71

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Solution

The fourth proportional to 136,408.37, 188,268.86 and 79,084.71 is: 109,151.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,408.37 : 188,268.86 = 79,084.71 : x
  2. Step 2: Convert to fraction form
    136,408.37/188,268.86 = 79,084.71/x
  3. Step 3: Cross multiply
    136,408.37x = 188,268.86 × 79,084.71
  4. Step 4: Simplify right side
    136,408.37x = 14,889,188,580.83
  5. Step 5: Solve for x
    x = 14,889,188,580.83/136,408.37
  6. Step 6: Final answer
    x = 109,151.57

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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.