Home / 200,455.12-276,618.09-109,811.40

Finding the Fourth Proportional to 200,455.12, 276,618.09 and 109,811.40

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Solution

The fourth proportional to 200,455.12, 276,618.09 and 109,811.40 is: 151,534.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,455.12 : 276,618.09 = 109,811.40 : x
  2. Step 2: Convert to fraction form
    200,455.12/276,618.09 = 109,811.40/x
  3. Step 3: Cross multiply
    200,455.12x = 276,618.09 × 109,811.40
  4. Step 4: Simplify right side
    200,455.12x = 30,375,819,728.23
  5. Step 5: Solve for x
    x = 30,375,819,728.23/200,455.12
  6. Step 6: Final answer
    x = 151,534.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.