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Finding the Fourth Proportional to 98,673.75, 136,169.78 and 53,961.75

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Solution

The fourth proportional to 98,673.75, 136,169.78 and 53,961.75 is: 74,467.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,673.75 : 136,169.78 = 53,961.75 : x
  2. Step 2: Convert to fraction form
    98,673.75/136,169.78 = 53,961.75/x
  3. Step 3: Cross multiply
    98,673.75x = 136,169.78 × 53,961.75
  4. Step 4: Simplify right side
    98,673.75x = 7,347,959,625.92
  5. Step 5: Solve for x
    x = 7,347,959,625.92/98,673.75
  6. Step 6: Final answer
    x = 74,467.22

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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.