Home / 128,918.92-193,375.32-75,946.84

Finding the Fourth Proportional to 128,918.92, 193,375.32 and 75,946.84

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Solution

The fourth proportional to 128,918.92, 193,375.32 and 75,946.84 is: 113,918.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,918.92 : 193,375.32 = 75,946.84 : x
  2. Step 2: Convert to fraction form
    128,918.92/193,375.32 = 75,946.84/x
  3. Step 3: Cross multiply
    128,918.92x = 193,375.32 × 75,946.84
  4. Step 4: Simplify right side
    128,918.92x = 14,686,244,487.99
  5. Step 5: Solve for x
    x = 14,686,244,487.99/128,918.92
  6. Step 6: Final answer
    x = 113,918.46

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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.