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Finding the Fourth Proportional to 169,378.26, 253,845.91 and 69,421.42

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Solution

The fourth proportional to 169,378.26, 253,845.91 and 69,421.42 is: 104,041.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,378.26 : 253,845.91 = 69,421.42 : x
  2. Step 2: Convert to fraction form
    169,378.26/253,845.91 = 69,421.42/x
  3. Step 3: Cross multiply
    169,378.26x = 253,845.91 × 69,421.42
  4. Step 4: Simplify right side
    169,378.26x = 17,622,343,533.39
  5. Step 5: Solve for x
    x = 17,622,343,533.39/169,378.26
  6. Step 6: Final answer
    x = 104,041.35

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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.