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Finding the Fourth Proportional to 154,586, 213,333 and 87,522.32

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Solution

The fourth proportional to 154,586, 213,333 and 87,522.32 is: 120,783.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,586 : 213,333 = 87,522.32 : x
  2. Step 2: Convert to fraction form
    154,586/213,333 = 87,522.32/x
  3. Step 3: Cross multiply
    154,586x = 213,333 × 87,522.32
  4. Step 4: Simplify right side
    154,586x = 18,671,399,092.56
  5. Step 5: Solve for x
    x = 18,671,399,092.56/154,586
  6. Step 6: Final answer
    x = 120,783.25

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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.