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Finding the Fourth Proportional to 108,676.20, 163,014.30 and 71,740.20

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Solution

The fourth proportional to 108,676.20, 163,014.30 and 71,740.20 is: 107,610.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,676.20 : 163,014.30 = 71,740.20 : x
  2. Step 2: Convert to fraction form
    108,676.20/163,014.30 = 71,740.20/x
  3. Step 3: Cross multiply
    108,676.20x = 163,014.30 × 71,740.20
  4. Step 4: Simplify right side
    108,676.20x = 11,694,678,484.86
  5. Step 5: Solve for x
    x = 11,694,678,484.86/108,676.20
  6. Step 6: Final answer
    x = 107,610.30

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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.