Home / 260,080.31-390,133.97-82,601.21

Finding the Fourth Proportional to 260,080.31, 390,133.97 and 82,601.21

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Solution

The fourth proportional to 260,080.31, 390,133.97 and 82,601.21 is: 123,906.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,080.31 : 390,133.97 = 82,601.21 : x
  2. Step 2: Convert to fraction form
    260,080.31/390,133.97 = 82,601.21/x
  3. Step 3: Cross multiply
    260,080.31x = 390,133.97 × 82,601.21
  4. Step 4: Simplify right side
    260,080.31x = 32,225,537,984.10
  5. Step 5: Solve for x
    x = 32,225,537,984.10/260,080.31
  6. Step 6: Final answer
    x = 123,906.10

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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.