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Finding the Fourth Proportional to 108,660.79, 149,945.65 and 63,346.15

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Solution

The fourth proportional to 108,660.79, 149,945.65 and 63,346.15 is: 87,414.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,660.79 : 149,945.65 = 63,346.15 : x
  2. Step 2: Convert to fraction form
    108,660.79/149,945.65 = 63,346.15/x
  3. Step 3: Cross multiply
    108,660.79x = 149,945.65 × 63,346.15
  4. Step 4: Simplify right side
    108,660.79x = 9,498,479,636.75
  5. Step 5: Solve for x
    x = 9,498,479,636.75/108,660.79
  6. Step 6: Final answer
    x = 87,414.05

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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.