Home / 140,678.92-194,135.96-77,017.80

Finding the Fourth Proportional to 140,678.92, 194,135.96 and 77,017.80

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Solution

The fourth proportional to 140,678.92, 194,135.96 and 77,017.80 is: 106,284.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,678.92 : 194,135.96 = 77,017.80 : x
  2. Step 2: Convert to fraction form
    140,678.92/194,135.96 = 77,017.80/x
  3. Step 3: Cross multiply
    140,678.92x = 194,135.96 × 77,017.80
  4. Step 4: Simplify right side
    140,678.92x = 14,951,924,540.09
  5. Step 5: Solve for x
    x = 14,951,924,540.09/140,678.92
  6. Step 6: Final answer
    x = 106,284.04

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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.