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Finding the Fourth Proportional to 122,437.67, 168,954.81 and 67,992.90

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Solution

The fourth proportional to 122,437.67, 168,954.81 and 67,992.90 is: 93,825.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,437.67 : 168,954.81 = 67,992.90 : x
  2. Step 2: Convert to fraction form
    122,437.67/168,954.81 = 67,992.90/x
  3. Step 3: Cross multiply
    122,437.67x = 168,954.81 × 67,992.90
  4. Step 4: Simplify right side
    122,437.67x = 11,487,727,500.85
  5. Step 5: Solve for x
    x = 11,487,727,500.85/122,437.67
  6. Step 6: Final answer
    x = 93,825.11

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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.