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Finding the Fourth Proportional to 128,576.15, 192,895.02 and 53,654.62

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Solution

The fourth proportional to 128,576.15, 192,895.02 and 53,654.62 is: 80,494.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,576.15 : 192,895.02 = 53,654.62 : x
  2. Step 2: Convert to fraction form
    128,576.15/192,895.02 = 53,654.62/x
  3. Step 3: Cross multiply
    128,576.15x = 192,895.02 × 53,654.62
  4. Step 4: Simplify right side
    128,576.15x = 10,349,708,997.99
  5. Step 5: Solve for x
    x = 10,349,708,997.99/128,576.15
  6. Step 6: Final answer
    x = 80,494.78

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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.