Home / 285,669.20-428,196.60-108,107.60

Finding the Fourth Proportional to 285,669.20, 428,196.60 and 108,107.60

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Solution

The fourth proportional to 285,669.20, 428,196.60 and 108,107.60 is: 162,045.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,669.20 : 428,196.60 = 108,107.60 : x
  2. Step 2: Convert to fraction form
    285,669.20/428,196.60 = 108,107.60/x
  3. Step 3: Cross multiply
    285,669.20x = 428,196.60 × 108,107.60
  4. Step 4: Simplify right side
    285,669.20x = 46,291,306,754.16
  5. Step 5: Solve for x
    x = 46,291,306,754.16/285,669.20
  6. Step 6: Final answer
    x = 162,045.14

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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.