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Finding the Fourth Proportional to 108,530.80, 162,796.20 and 64,207.60

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Solution

The fourth proportional to 108,530.80, 162,796.20 and 64,207.60 is: 96,311.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,530.80 : 162,796.20 = 64,207.60 : x
  2. Step 2: Convert to fraction form
    108,530.80/162,796.20 = 64,207.60/x
  3. Step 3: Cross multiply
    108,530.80x = 162,796.20 × 64,207.60
  4. Step 4: Simplify right side
    108,530.80x = 10,452,753,291.12
  5. Step 5: Solve for x
    x = 10,452,753,291.12/108,530.80
  6. Step 6: Final answer
    x = 96,311.40

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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.