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Finding the Fourth Proportional to 189,029.88, 260,898.90 and 108,511.80

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Solution

The fourth proportional to 189,029.88, 260,898.90 and 108,511.80 is: 149,767.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,029.88 : 260,898.90 = 108,511.80 : x
  2. Step 2: Convert to fraction form
    189,029.88/260,898.90 = 108,511.80/x
  3. Step 3: Cross multiply
    189,029.88x = 260,898.90 × 108,511.80
  4. Step 4: Simplify right side
    189,029.88x = 28,310,609,257.02
  5. Step 5: Solve for x
    x = 28,310,609,257.02/189,029.88
  6. Step 6: Final answer
    x = 149,767.91

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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.