Home / 139,831.71-192,968.09-76,168.14

Finding the Fourth Proportional to 139,831.71, 192,968.09 and 76,168.14

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Solution

The fourth proportional to 139,831.71, 192,968.09 and 76,168.14 is: 105,112.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,831.71 : 192,968.09 = 76,168.14 : x
  2. Step 2: Convert to fraction form
    139,831.71/192,968.09 = 76,168.14/x
  3. Step 3: Cross multiply
    139,831.71x = 192,968.09 × 76,168.14
  4. Step 4: Simplify right side
    139,831.71x = 14,698,020,113.81
  5. Step 5: Solve for x
    x = 14,698,020,113.81/139,831.71
  6. Step 6: Final answer
    x = 105,112.21

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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.