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Finding the Fourth Proportional to 128,013.24, 192,060.90 and 53,169.24

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Solution

The fourth proportional to 128,013.24, 192,060.90 and 53,169.24 is: 79,770.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,013.24 : 192,060.90 = 53,169.24 : x
  2. Step 2: Convert to fraction form
    128,013.24/192,060.90 = 53,169.24/x
  3. Step 3: Cross multiply
    128,013.24x = 192,060.90 × 53,169.24
  4. Step 4: Simplify right side
    128,013.24x = 10,211,732,086.72
  5. Step 5: Solve for x
    x = 10,211,732,086.72/128,013.24
  6. Step 6: Final answer
    x = 79,770.91

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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.