Home / 128,313.06-192,502.42-53,408.30

Finding the Fourth Proportional to 128,313.06, 192,502.42 and 53,408.30

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Solution

The fourth proportional to 128,313.06, 192,502.42 and 53,408.30 is: 80,126.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,313.06 : 192,502.42 = 53,408.30 : x
  2. Step 2: Convert to fraction form
    128,313.06/192,502.42 = 53,408.30/x
  3. Step 3: Cross multiply
    128,313.06x = 192,502.42 × 53,408.30
  4. Step 4: Simplify right side
    128,313.06x = 10,281,226,998.09
  5. Step 5: Solve for x
    x = 10,281,226,998.09/128,313.06
  6. Step 6: Final answer
    x = 80,126.11

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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.