Home / 139,739.48-192,844.52-76,078.36

Finding the Fourth Proportional to 139,739.48, 192,844.52 and 76,078.36

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Solution

The fourth proportional to 139,739.48, 192,844.52 and 76,078.36 is: 104,990.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,739.48 : 192,844.52 = 76,078.36 : x
  2. Step 2: Convert to fraction form
    139,739.48/192,844.52 = 76,078.36/x
  3. Step 3: Cross multiply
    139,739.48x = 192,844.52 × 76,078.36
  4. Step 4: Simplify right side
    139,739.48x = 14,671,294,816.59
  5. Step 5: Solve for x
    x = 14,671,294,816.59/139,739.48
  6. Step 6: Final answer
    x = 104,990.33

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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.