Home / 139,769.52-192,879.44-76,106.16

Finding the Fourth Proportional to 139,769.52, 192,879.44 and 76,106.16

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Solution

The fourth proportional to 139,769.52, 192,879.44 and 76,106.16 is: 105,025.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,769.52 : 192,879.44 = 76,106.16 : x
  2. Step 2: Convert to fraction form
    139,769.52/192,879.44 = 76,106.16/x
  3. Step 3: Cross multiply
    139,769.52x = 192,879.44 × 76,106.16
  4. Step 4: Simplify right side
    139,769.52x = 14,679,313,521.35
  5. Step 5: Solve for x
    x = 14,679,313,521.35/139,769.52
  6. Step 6: Final answer
    x = 105,025.14

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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.