Home / 139,828.54-192,965.07-76,166.86

Finding the Fourth Proportional to 139,828.54, 192,965.07 and 76,166.86

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Solution

The fourth proportional to 139,828.54, 192,965.07 and 76,166.86 is: 105,111.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,828.54 : 192,965.07 = 76,166.86 : x
  2. Step 2: Convert to fraction form
    139,828.54/192,965.07 = 76,166.86/x
  3. Step 3: Cross multiply
    139,828.54x = 192,965.07 × 76,166.86
  4. Step 4: Simplify right side
    139,828.54x = 14,697,543,471.58
  5. Step 5: Solve for x
    x = 14,697,543,471.58/139,828.54
  6. Step 6: Final answer
    x = 105,111.18

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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.