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Finding the Fourth Proportional to 108,865.28, 163,297.73 and 71,416.44

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Solution

The fourth proportional to 108,865.28, 163,297.73 and 71,416.44 is: 107,124.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,865.28 : 163,297.73 = 71,416.44 : x
  2. Step 2: Convert to fraction form
    108,865.28/163,297.73 = 71,416.44/x
  3. Step 3: Cross multiply
    108,865.28x = 163,297.73 × 71,416.44
  4. Step 4: Simplify right side
    108,865.28x = 11,662,142,715.22
  5. Step 5: Solve for x
    x = 11,662,142,715.22/108,865.28
  6. Step 6: Final answer
    x = 107,124.53

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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.