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Finding the Fourth Proportional to 123,751.94, 185,313.91 and 103,708.72

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Solution

The fourth proportional to 123,751.94, 185,313.91 and 103,708.72 is: 155,299.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,751.94 : 185,313.91 = 103,708.72 : x
  2. Step 2: Convert to fraction form
    123,751.94/185,313.91 = 103,708.72/x
  3. Step 3: Cross multiply
    123,751.94x = 185,313.91 × 103,708.72
  4. Step 4: Simplify right side
    123,751.94x = 19,218,668,571.12
  5. Step 5: Solve for x
    x = 19,218,668,571.12/123,751.94
  6. Step 6: Final answer
    x = 155,299.94

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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.