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Finding the Fourth Proportional to 108,671.85, 149,960.84 and 63,357.21

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Solution

The fourth proportional to 108,671.85, 149,960.84 and 63,357.21 is: 87,429.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,671.85 : 149,960.84 = 63,357.21 : x
  2. Step 2: Convert to fraction form
    108,671.85/149,960.84 = 63,357.21/x
  3. Step 3: Cross multiply
    108,671.85x = 149,960.84 × 63,357.21
  4. Step 4: Simplify right side
    108,671.85x = 9,501,100,114.87
  5. Step 5: Solve for x
    x = 9,501,100,114.87/108,671.85
  6. Step 6: Final answer
    x = 87,429.27

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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.