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Finding the Fourth Proportional to 118,903.72, 164,085.78 and 68,601.64

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Solution

The fourth proportional to 118,903.72, 164,085.78 and 68,601.64 is: 94,669.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,903.72 : 164,085.78 = 68,601.64 : x
  2. Step 2: Convert to fraction form
    118,903.72/164,085.78 = 68,601.64/x
  3. Step 3: Cross multiply
    118,903.72x = 164,085.78 × 68,601.64
  4. Step 4: Simplify right side
    118,903.72x = 11,256,553,608.68
  5. Step 5: Solve for x
    x = 11,256,553,608.68/118,903.72
  6. Step 6: Final answer
    x = 94,669.48

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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.