Home / 252,115.36-378,120.08-111,784.48

Finding the Fourth Proportional to 252,115.36, 378,120.08 and 111,784.48

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Solution

The fourth proportional to 252,115.36, 378,120.08 and 111,784.48 is: 167,653.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,115.36 : 378,120.08 = 111,784.48 : x
  2. Step 2: Convert to fraction form
    252,115.36/378,120.08 = 111,784.48/x
  3. Step 3: Cross multiply
    252,115.36x = 378,120.08 × 111,784.48
  4. Step 4: Simplify right side
    252,115.36x = 42,267,956,520.36
  5. Step 5: Solve for x
    x = 42,267,956,520.36/252,115.36
  6. Step 6: Final answer
    x = 167,653.24

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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.