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Finding the Fourth Proportional to 107,635.60, 148,456.20 and 65,141.20

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Solution

The fourth proportional to 107,635.60, 148,456.20 and 65,141.20 is: 89,845.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,635.60 : 148,456.20 = 65,141.20 : x
  2. Step 2: Convert to fraction form
    107,635.60/148,456.20 = 65,141.20/x
  3. Step 3: Cross multiply
    107,635.60x = 148,456.20 × 65,141.20
  4. Step 4: Simplify right side
    107,635.60x = 9,670,615,015.44
  5. Step 5: Solve for x
    x = 9,670,615,015.44/107,635.60
  6. Step 6: Final answer
    x = 89,845.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.