Home / 128,015.19-192,022.57-53,085.33

Finding the Fourth Proportional to 128,015.19, 192,022.57 and 53,085.33

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Solution

The fourth proportional to 128,015.19, 192,022.57 and 53,085.33 is: 79,627.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,015.19 : 192,022.57 = 53,085.33 : x
  2. Step 2: Convert to fraction form
    128,015.19/192,022.57 = 53,085.33/x
  3. Step 3: Cross multiply
    128,015.19x = 192,022.57 × 53,085.33
  4. Step 4: Simplify right side
    128,015.19x = 10,193,581,495.90
  5. Step 5: Solve for x
    x = 10,193,581,495.90/128,015.19
  6. Step 6: Final answer
    x = 79,627.91

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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.