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Finding the Fourth Proportional to 128,339.82, 192,508.50 and 34,845.57

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Solution

The fourth proportional to 128,339.82, 192,508.50 and 34,845.57 is: 52,268.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,339.82 : 192,508.50 = 34,845.57 : x
  2. Step 2: Convert to fraction form
    128,339.82/192,508.50 = 34,845.57/x
  3. Step 3: Cross multiply
    128,339.82x = 192,508.50 × 34,845.57
  4. Step 4: Simplify right side
    128,339.82x = 6,708,068,412.35
  5. Step 5: Solve for x
    x = 6,708,068,412.35/128,339.82
  6. Step 6: Final answer
    x = 52,268.02

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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.