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Finding the Fourth Proportional to 108,335.52, 149,440.36 and 65,285.64

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Solution

The fourth proportional to 108,335.52, 149,440.36 and 65,285.64 is: 90,056.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,335.52 : 149,440.36 = 65,285.64 : x
  2. Step 2: Convert to fraction form
    108,335.52/149,440.36 = 65,285.64/x
  3. Step 3: Cross multiply
    108,335.52x = 149,440.36 × 65,285.64
  4. Step 4: Simplify right side
    108,335.52x = 9,756,309,544.43
  5. Step 5: Solve for x
    x = 9,756,309,544.43/108,335.52
  6. Step 6: Final answer
    x = 90,056.42

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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.