Home / 139,831.57-192,967.27-76,169.22

Finding the Fourth Proportional to 139,831.57, 192,967.27 and 76,169.22

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Solution

The fourth proportional to 139,831.57, 192,967.27 and 76,169.22 is: 105,113.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,831.57 : 192,967.27 = 76,169.22 : x
  2. Step 2: Convert to fraction form
    139,831.57/192,967.27 = 76,169.22/x
  3. Step 3: Cross multiply
    139,831.57x = 192,967.27 × 76,169.22
  4. Step 4: Simplify right side
    139,831.57x = 14,698,166,441.43
  5. Step 5: Solve for x
    x = 14,698,166,441.43/139,831.57
  6. Step 6: Final answer
    x = 105,113.36

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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.