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Finding the Fourth Proportional to 154,625, 213,382.50 and 87,569.96

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Solution

The fourth proportional to 154,625, 213,382.50 and 87,569.96 is: 120,846.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,625 : 213,382.50 = 87,569.96 : x
  2. Step 2: Convert to fraction form
    154,625/213,382.50 = 87,569.96/x
  3. Step 3: Cross multiply
    154,625x = 213,382.50 × 87,569.96
  4. Step 4: Simplify right side
    154,625x = 18,685,896,989.70
  5. Step 5: Solve for x
    x = 18,685,896,989.70/154,625
  6. Step 6: Final answer
    x = 120,846.54

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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.