Home / 127,183.41-175,477.11-81,887.61

Finding the Fourth Proportional to 127,183.41, 175,477.11 and 81,887.61

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Solution

The fourth proportional to 127,183.41, 175,477.11 and 81,887.61 is: 112,981.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,183.41 : 175,477.11 = 81,887.61 : x
  2. Step 2: Convert to fraction form
    127,183.41/175,477.11 = 81,887.61/x
  3. Step 3: Cross multiply
    127,183.41x = 175,477.11 × 81,887.61
  4. Step 4: Simplify right side
    127,183.41x = 14,369,401,147.61
  5. Step 5: Solve for x
    x = 14,369,401,147.61/127,183.41
  6. Step 6: Final answer
    x = 112,981.73

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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.