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Finding the Fourth Proportional to 128,508.34, 192,775.41 and 44,257.40

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Solution

The fourth proportional to 128,508.34, 192,775.41 and 44,257.40 is: 66,390.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,508.34 : 192,775.41 = 44,257.40 : x
  2. Step 2: Convert to fraction form
    128,508.34/192,775.41 = 44,257.40/x
  3. Step 3: Cross multiply
    128,508.34x = 192,775.41 × 44,257.40
  4. Step 4: Simplify right side
    128,508.34x = 8,531,738,430.53
  5. Step 5: Solve for x
    x = 8,531,738,430.53/128,508.34
  6. Step 6: Final answer
    x = 66,390.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.