Home / 139,546.44-192,590.34-78,309.51

Finding the Fourth Proportional to 139,546.44, 192,590.34 and 78,309.51

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Solution

The fourth proportional to 139,546.44, 192,590.34 and 78,309.51 is: 108,076.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,546.44 : 192,590.34 = 78,309.51 : x
  2. Step 2: Convert to fraction form
    139,546.44/192,590.34 = 78,309.51/x
  3. Step 3: Cross multiply
    139,546.44x = 192,590.34 × 78,309.51
  4. Step 4: Simplify right side
    139,546.44x = 15,081,655,156.13
  5. Step 5: Solve for x
    x = 15,081,655,156.13/139,546.44
  6. Step 6: Final answer
    x = 108,076.24

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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.