Home / 139,212.24-192,040.32-85,509.36

Finding the Fourth Proportional to 139,212.24, 192,040.32 and 85,509.36

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Solution

The fourth proportional to 139,212.24, 192,040.32 and 85,509.36 is: 117,958.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,212.24 : 192,040.32 = 85,509.36 : x
  2. Step 2: Convert to fraction form
    139,212.24/192,040.32 = 85,509.36/x
  3. Step 3: Cross multiply
    139,212.24x = 192,040.32 × 85,509.36
  4. Step 4: Simplify right side
    139,212.24x = 16,421,244,857.40
  5. Step 5: Solve for x
    x = 16,421,244,857.40/139,212.24
  6. Step 6: Final answer
    x = 117,958.34

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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.