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Finding the Fourth Proportional to 136,221.67, 187,986.84 and 75,794.86

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Solution

The fourth proportional to 136,221.67, 187,986.84 and 75,794.86 is: 104,597.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,221.67 : 187,986.84 = 75,794.86 : x
  2. Step 2: Convert to fraction form
    136,221.67/187,986.84 = 75,794.86/x
  3. Step 3: Cross multiply
    136,221.67x = 187,986.84 × 75,794.86
  4. Step 4: Simplify right side
    136,221.67x = 14,248,435,749.68
  5. Step 5: Solve for x
    x = 14,248,435,749.68/136,221.67
  6. Step 6: Final answer
    x = 104,597.43

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1.5x scale

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.