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Finding the Fourth Proportional to 188,689.89, 260,393.73 and 102,650.75

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Solution

The fourth proportional to 188,689.89, 260,393.73 and 102,650.75 is: 141,658.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,689.89 : 260,393.73 = 102,650.75 : x
  2. Step 2: Convert to fraction form
    188,689.89/260,393.73 = 102,650.75/x
  3. Step 3: Cross multiply
    188,689.89x = 260,393.73 × 102,650.75
  4. Step 4: Simplify right side
    188,689.89x = 26,729,611,679.80
  5. Step 5: Solve for x
    x = 26,729,611,679.80/188,689.89
  6. Step 6: Final answer
    x = 141,658.95

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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.