Home / 128,501.82-177,388.20-96,678.54

Finding the Fourth Proportional to 128,501.82, 177,388.20 and 96,678.54

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Solution

The fourth proportional to 128,501.82, 177,388.20 and 96,678.54 is: 133,458.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,501.82 : 177,388.20 = 96,678.54 : x
  2. Step 2: Convert to fraction form
    128,501.82/177,388.20 = 96,678.54/x
  3. Step 3: Cross multiply
    128,501.82x = 177,388.20 × 96,678.54
  4. Step 4: Simplify right side
    128,501.82x = 17,149,632,189.23
  5. Step 5: Solve for x
    x = 17,149,632,189.23/128,501.82
  6. Step 6: Final answer
    x = 133,458.28

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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.