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Finding the Fourth Proportional to 121,633.74, 167,852.99 and 67,919.67

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Solution

The fourth proportional to 121,633.74, 167,852.99 and 67,919.67 is: 93,728.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,633.74 : 167,852.99 = 67,919.67 : x
  2. Step 2: Convert to fraction form
    121,633.74/167,852.99 = 67,919.67/x
  3. Step 3: Cross multiply
    121,633.74x = 167,852.99 × 67,919.67
  4. Step 4: Simplify right side
    121,633.74x = 11,400,519,859.11
  5. Step 5: Solve for x
    x = 11,400,519,859.11/121,633.74
  6. Step 6: Final answer
    x = 93,728.27

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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.