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Finding the Fourth Proportional to 108,138.54, 149,229.60 and 60,392.54

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Solution

The fourth proportional to 108,138.54, 149,229.60 and 60,392.54 is: 83,340.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,138.54 : 149,229.60 = 60,392.54 : x
  2. Step 2: Convert to fraction form
    108,138.54/149,229.60 = 60,392.54/x
  3. Step 3: Cross multiply
    108,138.54x = 149,229.60 × 60,392.54
  4. Step 4: Simplify right side
    108,138.54x = 9,012,354,587.18
  5. Step 5: Solve for x
    x = 9,012,354,587.18/108,138.54
  6. Step 6: Final answer
    x = 83,340.82

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1.5x scale

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.