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Finding the Fourth Proportional to 113,629.80, 156,809.48 and 68,333.88

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Solution

The fourth proportional to 113,629.80, 156,809.48 and 68,333.88 is: 94,300.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,629.80 : 156,809.48 = 68,333.88 : x
  2. Step 2: Convert to fraction form
    113,629.80/156,809.48 = 68,333.88/x
  3. Step 3: Cross multiply
    113,629.80x = 156,809.48 × 68,333.88
  4. Step 4: Simplify right side
    113,629.80x = 10,715,400,189.18
  5. Step 5: Solve for x
    x = 10,715,400,189.18/113,629.80
  6. Step 6: Final answer
    x = 94,300.97

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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.