Home / 139,664.13-192,739.95-76,005.42

Finding the Fourth Proportional to 139,664.13, 192,739.95 and 76,005.42

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Solution

The fourth proportional to 139,664.13, 192,739.95 and 76,005.42 is: 104,889.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,664.13 : 192,739.95 = 76,005.42 : x
  2. Step 2: Convert to fraction form
    139,664.13/192,739.95 = 76,005.42/x
  3. Step 3: Cross multiply
    139,664.13x = 192,739.95 × 76,005.42
  4. Step 4: Simplify right side
    139,664.13x = 14,649,280,850.53
  5. Step 5: Solve for x
    x = 14,649,280,850.53/139,664.13
  6. Step 6: Final answer
    x = 104,889.36

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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.