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Finding the Fourth Proportional to 169,975.83, 254,621.61 and 78,662.51

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Solution

The fourth proportional to 169,975.83, 254,621.61 and 78,662.51 is: 117,835.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,975.83 : 254,621.61 = 78,662.51 : x
  2. Step 2: Convert to fraction form
    169,975.83/254,621.61 = 78,662.51/x
  3. Step 3: Cross multiply
    169,975.83x = 254,621.61 × 78,662.51
  4. Step 4: Simplify right side
    169,975.83x = 20,029,174,624.56
  5. Step 5: Solve for x
    x = 20,029,174,624.56/169,975.83
  6. Step 6: Final answer
    x = 117,835.43

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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.