Home / 139,455.09-192,405.29-79,016.13

Finding the Fourth Proportional to 139,455.09, 192,405.29 and 79,016.13

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Solution

The fourth proportional to 139,455.09, 192,405.29 and 79,016.13 is: 109,018.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,455.09 : 192,405.29 = 79,016.13 : x
  2. Step 2: Convert to fraction form
    139,455.09/192,405.29 = 79,016.13/x
  3. Step 3: Cross multiply
    139,455.09x = 192,405.29 × 79,016.13
  4. Step 4: Simplify right side
    139,455.09x = 15,203,121,012.25
  5. Step 5: Solve for x
    x = 15,203,121,012.25/139,455.09
  6. Step 6: Final answer
    x = 109,018.04

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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.