Home / 139,756.20-192,496.14-107,428.92

Finding the Fourth Proportional to 139,756.20, 192,496.14 and 107,428.92

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Solution

The fourth proportional to 139,756.20, 192,496.14 and 107,428.92 is: 147,969.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,756.20 : 192,496.14 = 107,428.92 : x
  2. Step 2: Convert to fraction form
    139,756.20/192,496.14 = 107,428.92/x
  3. Step 3: Cross multiply
    139,756.20x = 192,496.14 × 107,428.92
  4. Step 4: Simplify right side
    139,756.20x = 20,679,652,424.37
  5. Step 5: Solve for x
    x = 20,679,652,424.37/139,756.20
  6. Step 6: Final answer
    x = 147,969.48

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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.