Home / 128,154.24-192,028.32-92,928.96

Finding the Fourth Proportional to 128,154.24, 192,028.32 and 92,928.96

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Solution

The fourth proportional to 128,154.24, 192,028.32 and 92,928.96 is: 139,246.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,154.24 : 192,028.32 = 92,928.96 : x
  2. Step 2: Convert to fraction form
    128,154.24/192,028.32 = 92,928.96/x
  3. Step 3: Cross multiply
    128,154.24x = 192,028.32 × 92,928.96
  4. Step 4: Simplify right side
    128,154.24x = 17,844,992,068.15
  5. Step 5: Solve for x
    x = 17,844,992,068.15/128,154.24
  6. Step 6: Final answer
    x = 139,246.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.