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Finding the Fourth Proportional to 139,831.95, 192,892.28 and 83,232.39

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Solution

The fourth proportional to 139,831.95, 192,892.28 and 83,232.39 is: 114,815.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,831.95 : 192,892.28 = 83,232.39 : x
  2. Step 2: Convert to fraction form
    139,831.95/192,892.28 = 83,232.39/x
  3. Step 3: Cross multiply
    139,831.95x = 192,892.28 × 83,232.39
  4. Step 4: Simplify right side
    139,831.95x = 16,054,885,060.79
  5. Step 5: Solve for x
    x = 16,054,885,060.79/139,831.95
  6. Step 6: Final answer
    x = 114,815.57

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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.