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Finding the Fourth Proportional to 140,276.64, 193,573.92 and 79,862

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Solution

The fourth proportional to 140,276.64, 193,573.92 and 79,862 is: 110,205.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,276.64 : 193,573.92 = 79,862 : x
  2. Step 2: Convert to fraction form
    140,276.64/193,573.92 = 79,862/x
  3. Step 3: Cross multiply
    140,276.64x = 193,573.92 × 79,862
  4. Step 4: Simplify right side
    140,276.64x = 15,459,200,399.04
  5. Step 5: Solve for x
    x = 15,459,200,399.04/140,276.64
  6. Step 6: Final answer
    x = 110,205.09

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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.