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Finding the Fourth Proportional to 110,978.60, 166,322.10 and 98,439.80

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Solution

The fourth proportional to 110,978.60, 166,322.10 and 98,439.80 is: 147,530.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,978.60 : 166,322.10 = 98,439.80 : x
  2. Step 2: Convert to fraction form
    110,978.60/166,322.10 = 98,439.80/x
  3. Step 3: Cross multiply
    110,978.60x = 166,322.10 × 98,439.80
  4. Step 4: Simplify right side
    110,978.60x = 16,372,714,259.58
  5. Step 5: Solve for x
    x = 16,372,714,259.58/110,978.60
  6. Step 6: Final answer
    x = 147,530.37

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.