Home / 140,769.60-194,260.80-77,107.20

Finding the Fourth Proportional to 140,769.60, 194,260.80 and 77,107.20

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Solution

The fourth proportional to 140,769.60, 194,260.80 and 77,107.20 is: 106,407.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,769.60 : 194,260.80 = 77,107.20 : x
  2. Step 2: Convert to fraction form
    140,769.60/194,260.80 = 77,107.20/x
  3. Step 3: Cross multiply
    140,769.60x = 194,260.80 × 77,107.20
  4. Step 4: Simplify right side
    140,769.60x = 14,978,906,357.76
  5. Step 5: Solve for x
    x = 14,978,906,357.76/140,769.60
  6. Step 6: Final answer
    x = 106,407.25

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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.