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Finding the Fourth Proportional to 169,804.26, 254,318.52 and 81,120.60

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Solution

The fourth proportional to 169,804.26, 254,318.52 and 81,120.60 is: 121,495.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,804.26 : 254,318.52 = 81,120.60 : x
  2. Step 2: Convert to fraction form
    169,804.26/254,318.52 = 81,120.60/x
  3. Step 3: Cross multiply
    169,804.26x = 254,318.52 × 81,120.60
  4. Step 4: Simplify right side
    169,804.26x = 20,630,470,933.51
  5. Step 5: Solve for x
    x = 20,630,470,933.51/169,804.26
  6. Step 6: Final answer
    x = 121,495.60

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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.