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Finding the Fourth Proportional to 128,224.30, 192,336.45 and 128,224.30

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Solution

The fourth proportional to 128,224.30, 192,336.45 and 128,224.30 is: 192,336.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,224.30 : 192,336.45 = 128,224.30 : x
  2. Step 2: Convert to fraction form
    128,224.30/192,336.45 = 128,224.30/x
  3. Step 3: Cross multiply
    128,224.30x = 192,336.45 × 128,224.30
  4. Step 4: Simplify right side
    128,224.30x = 24,662,206,665.74
  5. Step 5: Solve for x
    x = 24,662,206,665.74/128,224.30
  6. Step 6: Final answer
    x = 192,336.45

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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.