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Finding the Fourth Proportional to 133,162.70, 183,768.55 and 72,736.60

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Solution

The fourth proportional to 133,162.70, 183,768.55 and 72,736.60 is: 100,378.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,162.70 : 183,768.55 = 72,736.60 : x
  2. Step 2: Convert to fraction form
    133,162.70/183,768.55 = 72,736.60/x
  3. Step 3: Cross multiply
    133,162.70x = 183,768.55 × 72,736.60
  4. Step 4: Simplify right side
    133,162.70x = 13,366,699,513.93
  5. Step 5: Solve for x
    x = 13,366,699,513.93/133,162.70
  6. Step 6: Final answer
    x = 100,378.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.