Home / 136,659.86-188,571.75-76,223.42

Finding the Fourth Proportional to 136,659.86, 188,571.75 and 76,223.42

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Solution

The fourth proportional to 136,659.86, 188,571.75 and 76,223.42 is: 105,177.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,659.86 : 188,571.75 = 76,223.42 : x
  2. Step 2: Convert to fraction form
    136,659.86/188,571.75 = 76,223.42/x
  3. Step 3: Cross multiply
    136,659.86x = 188,571.75 × 76,223.42
  4. Step 4: Simplify right side
    136,659.86x = 14,373,583,700.39
  5. Step 5: Solve for x
    x = 14,373,583,700.39/136,659.86
  6. Step 6: Final answer
    x = 105,177.80

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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.