Home / 168,621.14-252,959.16-78,753.72

Finding the Fourth Proportional to 168,621.14, 252,959.16 and 78,753.72

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Solution

The fourth proportional to 168,621.14, 252,959.16 and 78,753.72 is: 118,143.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,621.14 : 252,959.16 = 78,753.72 : x
  2. Step 2: Convert to fraction form
    168,621.14/252,959.16 = 78,753.72/x
  3. Step 3: Cross multiply
    168,621.14x = 252,959.16 × 78,753.72
  4. Step 4: Simplify right side
    168,621.14x = 19,921,474,858.08
  5. Step 5: Solve for x
    x = 19,921,474,858.08/168,621.14
  6. Step 6: Final answer
    x = 118,143.40

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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.