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Finding the Fourth Proportional to 108,625.75, 149,903.18 and 63,330.55

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Solution

The fourth proportional to 108,625.75, 149,903.18 and 63,330.55 is: 87,395.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,625.75 : 149,903.18 = 63,330.55 : x
  2. Step 2: Convert to fraction form
    108,625.75/149,903.18 = 63,330.55/x
  3. Step 3: Cross multiply
    108,625.75x = 149,903.18 × 63,330.55
  4. Step 4: Simplify right side
    108,625.75x = 9,493,450,836.15
  5. Step 5: Solve for x
    x = 9,493,450,836.15/108,625.75
  6. Step 6: Final answer
    x = 87,395.95

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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.