Home / 140,571.57-193,993.61-76,909.36

Finding the Fourth Proportional to 140,571.57, 193,993.61 and 76,909.36

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Solution

The fourth proportional to 140,571.57, 193,993.61 and 76,909.36 is: 106,137.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,571.57 : 193,993.61 = 76,909.36 : x
  2. Step 2: Convert to fraction form
    140,571.57/193,993.61 = 76,909.36/x
  3. Step 3: Cross multiply
    140,571.57x = 193,993.61 × 76,909.36
  4. Step 4: Simplify right side
    140,571.57x = 14,919,924,389.19
  5. Step 5: Solve for x
    x = 14,919,924,389.19/140,571.57
  6. Step 6: Final answer
    x = 106,137.57

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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.