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Finding the Fourth Proportional to 123,847.28, 170,909.28 and 67,258.64

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Solution

The fourth proportional to 123,847.28, 170,909.28 and 67,258.64 is: 92,816.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,847.28 : 170,909.28 = 67,258.64 : x
  2. Step 2: Convert to fraction form
    123,847.28/170,909.28 = 67,258.64/x
  3. Step 3: Cross multiply
    123,847.28x = 170,909.28 × 67,258.64
  4. Step 4: Simplify right side
    123,847.28x = 11,495,125,736.18
  5. Step 5: Solve for x
    x = 11,495,125,736.18/123,847.28
  6. Step 6: Final answer
    x = 92,816.94

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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.