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Finding the Fourth Proportional to 108,467.56, 162,735.90 and 86,366.44

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Solution

The fourth proportional to 108,467.56, 162,735.90 and 86,366.44 is: 129,577.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,467.56 : 162,735.90 = 86,366.44 : x
  2. Step 2: Convert to fraction form
    108,467.56/162,735.90 = 86,366.44/x
  3. Step 3: Cross multiply
    108,467.56x = 162,735.90 × 86,366.44
  4. Step 4: Simplify right side
    108,467.56x = 14,054,920,343.20
  5. Step 5: Solve for x
    x = 14,054,920,343.20/108,467.56
  6. Step 6: Final answer
    x = 129,577.18

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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.