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Finding the Fourth Proportional to 169,199.78, 253,785.15 and 69,331.46

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Solution

The fourth proportional to 169,199.78, 253,785.15 and 69,331.46 is: 103,991.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,199.78 : 253,785.15 = 69,331.46 : x
  2. Step 2: Convert to fraction form
    169,199.78/253,785.15 = 69,331.46/x
  3. Step 3: Cross multiply
    169,199.78x = 253,785.15 × 69,331.46
  4. Step 4: Simplify right side
    169,199.78x = 17,595,294,975.82
  5. Step 5: Solve for x
    x = 17,595,294,975.82/169,199.78
  6. Step 6: Final answer
    x = 103,991.24

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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.