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Finding the Fourth Proportional to 128,497.82, 177,382.59 and 96,674.54

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Solution

The fourth proportional to 128,497.82, 177,382.59 and 96,674.54 is: 133,452.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,497.82 : 177,382.59 = 96,674.54 : x
  2. Step 2: Convert to fraction form
    128,497.82/177,382.59 = 96,674.54/x
  3. Step 3: Cross multiply
    128,497.82x = 177,382.59 × 96,674.54
  4. Step 4: Simplify right side
    128,497.82x = 17,148,380,292.26
  5. Step 5: Solve for x
    x = 17,148,380,292.26/128,497.82
  6. Step 6: Final answer
    x = 133,452.69

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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.