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Finding the Fourth Proportional to 121,511.82, 167,686.08 and 67,793.64

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Solution

The fourth proportional to 121,511.82, 167,686.08 and 67,793.64 is: 93,555.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,511.82 : 167,686.08 = 67,793.64 : x
  2. Step 2: Convert to fraction form
    121,511.82/167,686.08 = 67,793.64/x
  3. Step 3: Cross multiply
    121,511.82x = 167,686.08 × 67,793.64
  4. Step 4: Simplify right side
    121,511.82x = 11,368,049,740.53
  5. Step 5: Solve for x
    x = 11,368,049,740.53/121,511.82
  6. Step 6: Final answer
    x = 93,555.09

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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.