Home / 139,663.28-192,739.38-76,005.16

Finding the Fourth Proportional to 139,663.28, 192,739.38 and 76,005.16

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Solution

The fourth proportional to 139,663.28, 192,739.38 and 76,005.16 is: 104,889.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,663.28 : 192,739.38 = 76,005.16 : x
  2. Step 2: Convert to fraction form
    139,663.28/192,739.38 = 76,005.16/x
  3. Step 3: Cross multiply
    139,663.28x = 192,739.38 × 76,005.16
  4. Step 4: Simplify right side
    139,663.28x = 14,649,187,415.20
  5. Step 5: Solve for x
    x = 14,649,187,415.20/139,663.28
  6. Step 6: Final answer
    x = 104,889.33

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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.