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Finding the Fourth Proportional to 192,062.63, 288,125.01 and 72,128.90

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Solution

The fourth proportional to 192,062.63, 288,125.01 and 72,128.90 is: 108,205.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,062.63 : 288,125.01 = 72,128.90 : x
  2. Step 2: Convert to fraction form
    192,062.63/288,125.01 = 72,128.90/x
  3. Step 3: Cross multiply
    192,062.63x = 288,125.01 × 72,128.90
  4. Step 4: Simplify right side
    192,062.63x = 20,782,140,033.79
  5. Step 5: Solve for x
    x = 20,782,140,033.79/192,062.63
  6. Step 6: Final answer
    x = 108,205.02

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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.