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Finding the Fourth Proportional to 108,967.28, 163,232.20 and 79,447.64

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Solution

The fourth proportional to 108,967.28, 163,232.20 and 79,447.64 is: 119,011.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,967.28 : 163,232.20 = 79,447.64 : x
  2. Step 2: Convert to fraction form
    108,967.28/163,232.20 = 79,447.64/x
  3. Step 3: Cross multiply
    108,967.28x = 163,232.20 × 79,447.64
  4. Step 4: Simplify right side
    108,967.28x = 12,968,413,062.01
  5. Step 5: Solve for x
    x = 12,968,413,062.01/108,967.28
  6. Step 6: Final answer
    x = 119,011.99

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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.