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Finding the Fourth Proportional to 108,932.80, 163,399.20 and 69,372.40

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Solution

The fourth proportional to 108,932.80, 163,399.20 and 69,372.40 is: 104,058.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,932.80 : 163,399.20 = 69,372.40 : x
  2. Step 2: Convert to fraction form
    108,932.80/163,399.20 = 69,372.40/x
  3. Step 3: Cross multiply
    108,932.80x = 163,399.20 × 69,372.40
  4. Step 4: Simplify right side
    108,932.80x = 11,335,394,662.08
  5. Step 5: Solve for x
    x = 11,335,394,662.08/108,932.80
  6. Step 6: Final answer
    x = 104,058.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.