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Finding the Fourth Proportional to 128,552.88, 192,847.68 and 39,814.32

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Solution

The fourth proportional to 128,552.88, 192,847.68 and 39,814.32 is: 59,727.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,552.88 : 192,847.68 = 39,814.32 : x
  2. Step 2: Convert to fraction form
    128,552.88/192,847.68 = 39,814.32/x
  3. Step 3: Cross multiply
    128,552.88x = 192,847.68 × 39,814.32
  4. Step 4: Simplify right side
    128,552.88x = 7,678,099,242.78
  5. Step 5: Solve for x
    x = 7,678,099,242.78/128,552.88
  6. Step 6: Final answer
    x = 59,727.17

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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.