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Finding the Fourth Proportional to 187,662.75, 258,974.61 and 102,782.85

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Solution

The fourth proportional to 187,662.75, 258,974.61 and 102,782.85 is: 141,840.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,662.75 : 258,974.61 = 102,782.85 : x
  2. Step 2: Convert to fraction form
    187,662.75/258,974.61 = 102,782.85/x
  3. Step 3: Cross multiply
    187,662.75x = 258,974.61 × 102,782.85
  4. Step 4: Simplify right side
    187,662.75x = 26,618,148,493.44
  5. Step 5: Solve for x
    x = 26,618,148,493.44/187,662.75
  6. Step 6: Final answer
    x = 141,840.34

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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.