Home / 128,318-192,473.76-34,821.32

Finding the Fourth Proportional to 128,318, 192,473.76 and 34,821.32

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Solution

The fourth proportional to 128,318, 192,473.76 and 34,821.32 is: 52,231.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,318 : 192,473.76 = 34,821.32 : x
  2. Step 2: Convert to fraction form
    128,318/192,473.76 = 34,821.32/x
  3. Step 3: Cross multiply
    128,318x = 192,473.76 × 34,821.32
  4. Step 4: Simplify right side
    128,318x = 6,702,190,388.56
  5. Step 5: Solve for x
    x = 6,702,190,388.56/128,318
  6. Step 6: Final answer
    x = 52,231.10

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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.