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Finding the Fourth Proportional to 128,207.54, 192,296.72 and 34,720.58

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Solution

The fourth proportional to 128,207.54, 192,296.72 and 34,720.58 is: 52,076.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,207.54 : 192,296.72 = 34,720.58 : x
  2. Step 2: Convert to fraction form
    128,207.54/192,296.72 = 34,720.58/x
  3. Step 3: Cross multiply
    128,207.54x = 192,296.72 × 34,720.58
  4. Step 4: Simplify right side
    128,207.54x = 6,676,653,650.50
  5. Step 5: Solve for x
    x = 6,676,653,650.50/128,207.54
  6. Step 6: Final answer
    x = 52,076.92

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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.