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Finding the Fourth Proportional to 107,654.40, 161,481.60 and 84,300.80

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Solution

The fourth proportional to 107,654.40, 161,481.60 and 84,300.80 is: 126,451.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,654.40 : 161,481.60 = 84,300.80 : x
  2. Step 2: Convert to fraction form
    107,654.40/161,481.60 = 84,300.80/x
  3. Step 3: Cross multiply
    107,654.40x = 161,481.60 × 84,300.80
  4. Step 4: Simplify right side
    107,654.40x = 13,613,028,065.28
  5. Step 5: Solve for x
    x = 13,613,028,065.28/107,654.40
  6. Step 6: Final answer
    x = 126,451.20

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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.