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Finding the Fourth Proportional to 118,887.75, 164,065.10 and 68,586.75

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Solution

The fourth proportional to 118,887.75, 164,065.10 and 68,586.75 is: 94,649.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,887.75 : 164,065.10 = 68,586.75 : x
  2. Step 2: Convert to fraction form
    118,887.75/164,065.10 = 68,586.75/x
  3. Step 3: Cross multiply
    118,887.75x = 164,065.10 × 68,586.75
  4. Step 4: Simplify right side
    118,887.75x = 11,252,691,654.49
  5. Step 5: Solve for x
    x = 11,252,691,654.49/118,887.75
  6. Step 6: Final answer
    x = 94,649.72

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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.