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Finding the Fourth Proportional to 120,909.39, 166,859.01 and 67,196.67

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Solution

The fourth proportional to 120,909.39, 166,859.01 and 67,196.67 is: 92,733.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,909.39 : 166,859.01 = 67,196.67 : x
  2. Step 2: Convert to fraction form
    120,909.39/166,859.01 = 67,196.67/x
  3. Step 3: Cross multiply
    120,909.39x = 166,859.01 × 67,196.67
  4. Step 4: Simplify right side
    120,909.39x = 11,212,369,831.50
  5. Step 5: Solve for x
    x = 11,212,369,831.50/120,909.39
  6. Step 6: Final answer
    x = 92,733.66

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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.