Home / 128,246.05-192,389.75-39,499.52

Finding the Fourth Proportional to 128,246.05, 192,389.75 and 39,499.52

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Solution

The fourth proportional to 128,246.05, 192,389.75 and 39,499.52 is: 59,255.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,246.05 : 192,389.75 = 39,499.52 : x
  2. Step 2: Convert to fraction form
    128,246.05/192,389.75 = 39,499.52/x
  3. Step 3: Cross multiply
    128,246.05x = 192,389.75 × 39,499.52
  4. Step 4: Simplify right side
    128,246.05x = 7,599,303,357.64
  5. Step 5: Solve for x
    x = 7,599,303,357.64/128,246.05
  6. Step 6: Final answer
    x = 59,255.65

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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.