Home / 101,936.60-140,674.38-56,618.78

Finding the Fourth Proportional to 101,936.60, 140,674.38 and 56,618.78

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Solution

The fourth proportional to 101,936.60, 140,674.38 and 56,618.78 is: 78,134.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,936.60 : 140,674.38 = 56,618.78 : x
  2. Step 2: Convert to fraction form
    101,936.60/140,674.38 = 56,618.78/x
  3. Step 3: Cross multiply
    101,936.60x = 140,674.38 × 56,618.78
  4. Step 4: Simplify right side
    101,936.60x = 7,964,811,772.86
  5. Step 5: Solve for x
    x = 7,964,811,772.86/101,936.60
  6. Step 6: Final answer
    x = 78,134.96

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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.