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Finding the Fourth Proportional to 129,062.97, 193,179.93 and 68,941.11

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Solution

The fourth proportional to 129,062.97, 193,179.93 and 68,941.11 is: 103,190.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,062.97 : 193,179.93 = 68,941.11 : x
  2. Step 2: Convert to fraction form
    129,062.97/193,179.93 = 68,941.11/x
  3. Step 3: Cross multiply
    129,062.97x = 193,179.93 × 68,941.11
  4. Step 4: Simplify right side
    129,062.97x = 13,318,038,803.92
  5. Step 5: Solve for x
    x = 13,318,038,803.92/129,062.97
  6. Step 6: Final answer
    x = 103,190.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.