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Finding the Fourth Proportional to 128,684.63, 193,024.22 and 35,190.38

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Solution

The fourth proportional to 128,684.63, 193,024.22 and 35,190.38 is: 52,784.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,684.63 : 193,024.22 = 35,190.38 : x
  2. Step 2: Convert to fraction form
    128,684.63/193,024.22 = 35,190.38/x
  3. Step 3: Cross multiply
    128,684.63x = 193,024.22 × 35,190.38
  4. Step 4: Simplify right side
    128,684.63x = 6,792,595,957.61
  5. Step 5: Solve for x
    x = 6,792,595,957.61/128,684.63
  6. Step 6: Final answer
    x = 52,784.83

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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.