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Finding the Fourth Proportional to 121,475.34, 167,639.28 and 67,770.84

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Solution

The fourth proportional to 121,475.34, 167,639.28 and 67,770.84 is: 93,525.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,475.34 : 167,639.28 = 67,770.84 : x
  2. Step 2: Convert to fraction form
    121,475.34/167,639.28 = 67,770.84/x
  3. Step 3: Cross multiply
    121,475.34x = 167,639.28 × 67,770.84
  4. Step 4: Simplify right side
    121,475.34x = 11,361,054,822.60
  5. Step 5: Solve for x
    x = 11,361,054,822.60/121,475.34
  6. Step 6: Final answer
    x = 93,525.61

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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.