Home / 139,481.02-192,477.60-79,048.12

Finding the Fourth Proportional to 139,481.02, 192,477.60 and 79,048.12

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Solution

The fourth proportional to 139,481.02, 192,477.60 and 79,048.12 is: 109,082.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,481.02 : 192,477.60 = 79,048.12 : x
  2. Step 2: Convert to fraction form
    139,481.02/192,477.60 = 79,048.12/x
  3. Step 3: Cross multiply
    139,481.02x = 192,477.60 × 79,048.12
  4. Step 4: Simplify right side
    139,481.02x = 15,214,992,422.11
  5. Step 5: Solve for x
    x = 15,214,992,422.11/139,481.02
  6. Step 6: Final answer
    x = 109,082.89

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1.5x scale

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.