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Finding the Fourth Proportional to 189,072.62, 283,608.93 and 129,728.37

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Solution

The fourth proportional to 189,072.62, 283,608.93 and 129,728.37 is: 194,592.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,072.62 : 283,608.93 = 129,728.37 : x
  2. Step 2: Convert to fraction form
    189,072.62/283,608.93 = 129,728.37/x
  3. Step 3: Cross multiply
    189,072.62x = 283,608.93 × 129,728.37
  4. Step 4: Simplify right side
    189,072.62x = 36,792,124,206.34
  5. Step 5: Solve for x
    x = 36,792,124,206.34/189,072.62
  6. Step 6: Final answer
    x = 194,592.56

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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.