Home / 252,135.12-378,206.64-74,660.16

Finding the Fourth Proportional to 252,135.12, 378,206.64 and 74,660.16

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Solution

The fourth proportional to 252,135.12, 378,206.64 and 74,660.16 is: 111,991.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,135.12 : 378,206.64 = 74,660.16 : x
  2. Step 2: Convert to fraction form
    252,135.12/378,206.64 = 74,660.16/x
  3. Step 3: Cross multiply
    252,135.12x = 378,206.64 × 74,660.16
  4. Step 4: Simplify right side
    252,135.12x = 28,236,968,255.46
  5. Step 5: Solve for x
    x = 28,236,968,255.46/252,135.12
  6. Step 6: Final answer
    x = 111,991.41

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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.