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Finding the Fourth Proportional to 86,333.67, 118,902.20 and 74,392.65

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Solution

The fourth proportional to 86,333.67, 118,902.20 and 74,392.65 is: 102,456.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,333.67 : 118,902.20 = 74,392.65 : x
  2. Step 2: Convert to fraction form
    86,333.67/118,902.20 = 74,392.65/x
  3. Step 3: Cross multiply
    86,333.67x = 118,902.20 × 74,392.65
  4. Step 4: Simplify right side
    86,333.67x = 8,845,449,376.87
  5. Step 5: Solve for x
    x = 8,845,449,376.87/86,333.67
  6. Step 6: Final answer
    x = 102,456.54

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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.