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Finding the Fourth Proportional to 108,575.60, 162,863.40 and 73,146.20

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Solution

The fourth proportional to 108,575.60, 162,863.40 and 73,146.20 is: 109,719.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,575.60 : 162,863.40 = 73,146.20 : x
  2. Step 2: Convert to fraction form
    108,575.60/162,863.40 = 73,146.20/x
  3. Step 3: Cross multiply
    108,575.60x = 162,863.40 × 73,146.20
  4. Step 4: Simplify right side
    108,575.60x = 11,912,838,829.08
  5. Step 5: Solve for x
    x = 11,912,838,829.08/108,575.60
  6. Step 6: Final answer
    x = 109,719.30

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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.