Home / 139,739.07-192,839.77-76,076.87

Finding the Fourth Proportional to 139,739.07, 192,839.77 and 76,076.87

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Solution

The fourth proportional to 139,739.07, 192,839.77 and 76,076.87 is: 104,986.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,739.07 : 192,839.77 = 76,076.87 : x
  2. Step 2: Convert to fraction form
    139,739.07/192,839.77 = 76,076.87/x
  3. Step 3: Cross multiply
    139,739.07x = 192,839.77 × 76,076.87
  4. Step 4: Simplify right side
    139,739.07x = 14,670,646,113.12
  5. Step 5: Solve for x
    x = 14,670,646,113.12/139,739.07
  6. Step 6: Final answer
    x = 104,986.00

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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.