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Finding the Fourth Proportional to 139,871.32, 192,869.67 and 94,470.49

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Solution

The fourth proportional to 139,871.32, 192,869.67 and 94,470.49 is: 130,266.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,871.32 : 192,869.67 = 94,470.49 : x
  2. Step 2: Convert to fraction form
    139,871.32/192,869.67 = 94,470.49/x
  3. Step 3: Cross multiply
    139,871.32x = 192,869.67 × 94,470.49
  4. Step 4: Simplify right side
    139,871.32x = 18,220,492,231.04
  5. Step 5: Solve for x
    x = 18,220,492,231.04/139,871.32
  6. Step 6: Final answer
    x = 130,266.11

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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.