Home / 200,631.28-276,869.42-109,985.60

Finding the Fourth Proportional to 200,631.28, 276,869.42 and 109,985.60

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Solution

The fourth proportional to 200,631.28, 276,869.42 and 109,985.60 is: 151,779.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,631.28 : 276,869.42 = 109,985.60 : x
  2. Step 2: Convert to fraction form
    200,631.28/276,869.42 = 109,985.60/x
  3. Step 3: Cross multiply
    200,631.28x = 276,869.42 × 109,985.60
  4. Step 4: Simplify right side
    200,631.28x = 30,451,647,968.32
  5. Step 5: Solve for x
    x = 30,451,647,968.32/200,631.28
  6. Step 6: Final answer
    x = 151,779.16

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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.