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Finding the Fourth Proportional to 203,862.58, 305,784.06 and 68,917.66

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Solution

The fourth proportional to 203,862.58, 305,784.06 and 68,917.66 is: 103,373.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,862.58 : 305,784.06 = 68,917.66 : x
  2. Step 2: Convert to fraction form
    203,862.58/305,784.06 = 68,917.66/x
  3. Step 3: Cross multiply
    203,862.58x = 305,784.06 × 68,917.66
  4. Step 4: Simplify right side
    203,862.58x = 21,073,921,880.50
  5. Step 5: Solve for x
    x = 21,073,921,880.50/203,862.58
  6. Step 6: Final answer
    x = 103,373.17

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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.