Home / 128,662.24-192,911.28-76,087.84

Finding the Fourth Proportional to 128,662.24, 192,911.28 and 76,087.84

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Solution

The fourth proportional to 128,662.24, 192,911.28 and 76,087.84 is: 114,083.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,662.24 : 192,911.28 = 76,087.84 : x
  2. Step 2: Convert to fraction form
    128,662.24/192,911.28 = 76,087.84/x
  3. Step 3: Cross multiply
    128,662.24x = 192,911.28 × 76,087.84
  4. Step 4: Simplify right side
    128,662.24x = 14,678,202,606.84
  5. Step 5: Solve for x
    x = 14,678,202,606.84/128,662.24
  6. Step 6: Final answer
    x = 114,083.22

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1.5x scale

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.