Home / 128,213.11-192,327.87-49,327.35

Finding the Fourth Proportional to 128,213.11, 192,327.87 and 49,327.35

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Solution

The fourth proportional to 128,213.11, 192,327.87 and 49,327.35 is: 73,994.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,213.11 : 192,327.87 = 49,327.35 : x
  2. Step 2: Convert to fraction form
    128,213.11/192,327.87 = 49,327.35/x
  3. Step 3: Cross multiply
    128,213.11x = 192,327.87 × 49,327.35
  4. Step 4: Simplify right side
    128,213.11x = 9,487,024,158.24
  5. Step 5: Solve for x
    x = 9,487,024,158.24/128,213.11
  6. Step 6: Final answer
    x = 73,994.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.