Home / 139,541.70-192,563.55-79,118.13

Finding the Fourth Proportional to 139,541.70, 192,563.55 and 79,118.13

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Solution

The fourth proportional to 139,541.70, 192,563.55 and 79,118.13 is: 109,180.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,541.70 : 192,563.55 = 79,118.13 : x
  2. Step 2: Convert to fraction form
    139,541.70/192,563.55 = 79,118.13/x
  3. Step 3: Cross multiply
    139,541.70x = 192,563.55 × 79,118.13
  4. Step 4: Simplify right side
    139,541.70x = 15,235,267,982.16
  5. Step 5: Solve for x
    x = 15,235,267,982.16/139,541.70
  6. Step 6: Final answer
    x = 109,180.75

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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.