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Finding the Fourth Proportional to 123,004.40, 169,762.12 and 69,299.78

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Solution

The fourth proportional to 123,004.40, 169,762.12 and 69,299.78 is: 95,642.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,004.40 : 169,762.12 = 69,299.78 : x
  2. Step 2: Convert to fraction form
    123,004.40/169,762.12 = 69,299.78/x
  3. Step 3: Cross multiply
    123,004.40x = 169,762.12 × 69,299.78
  4. Step 4: Simplify right side
    123,004.40x = 11,764,477,568.33
  5. Step 5: Solve for x
    x = 11,764,477,568.33/123,004.40
  6. Step 6: Final answer
    x = 95,642.74

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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.