Home / 128,484.03-192,724.96-100,427.69

Finding the Fourth Proportional to 128,484.03, 192,724.96 and 100,427.69

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Solution

The fourth proportional to 128,484.03, 192,724.96 and 100,427.69 is: 150,640.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,484.03 : 192,724.96 = 100,427.69 : x
  2. Step 2: Convert to fraction form
    128,484.03/192,724.96 = 100,427.69/x
  3. Step 3: Cross multiply
    128,484.03x = 192,724.96 × 100,427.69
  4. Step 4: Simplify right side
    128,484.03x = 19,354,922,538.14
  5. Step 5: Solve for x
    x = 19,354,922,538.14/128,484.03
  6. Step 6: Final answer
    x = 150,640.69

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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.