Home / 139,548.12-192,581.47-79,943.64

Finding the Fourth Proportional to 139,548.12, 192,581.47 and 79,943.64

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Solution

The fourth proportional to 139,548.12, 192,581.47 and 79,943.64 is: 110,325.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,548.12 : 192,581.47 = 79,943.64 : x
  2. Step 2: Convert to fraction form
    139,548.12/192,581.47 = 79,943.64/x
  3. Step 3: Cross multiply
    139,548.12x = 192,581.47 × 79,943.64
  4. Step 4: Simplify right side
    139,548.12x = 15,395,663,708.35
  5. Step 5: Solve for x
    x = 15,395,663,708.35/139,548.12
  6. Step 6: Final answer
    x = 110,325.12

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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.