Home / 128,318.15-192,473.99-34,821.47

Finding the Fourth Proportional to 128,318.15, 192,473.99 and 34,821.47

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Solution

The fourth proportional to 128,318.15, 192,473.99 and 34,821.47 is: 52,231.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,318.15 : 192,473.99 = 34,821.47 : x
  2. Step 2: Convert to fraction form
    128,318.15/192,473.99 = 34,821.47/x
  3. Step 3: Cross multiply
    128,318.15x = 192,473.99 × 34,821.47
  4. Step 4: Simplify right side
    128,318.15x = 6,702,227,268.57
  5. Step 5: Solve for x
    x = 6,702,227,268.57/128,318.15
  6. Step 6: Final answer
    x = 52,231.33

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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.