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Finding the Fourth Proportional to 154,794.50, 213,625.73 and 86,815.49

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Solution

The fourth proportional to 154,794.50, 213,625.73 and 86,815.49 is: 119,810.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,794.50 : 213,625.73 = 86,815.49 : x
  2. Step 2: Convert to fraction form
    154,794.50/213,625.73 = 86,815.49/x
  3. Step 3: Cross multiply
    154,794.50x = 213,625.73 × 86,815.49
  4. Step 4: Simplify right side
    154,794.50x = 18,546,020,924.35
  5. Step 5: Solve for x
    x = 18,546,020,924.35/154,794.50
  6. Step 6: Final answer
    x = 119,810.60

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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.