Home / 165,721.40-248,582.10-120,620.60

Finding the Fourth Proportional to 165,721.40, 248,582.10 and 120,620.60

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Solution

The fourth proportional to 165,721.40, 248,582.10 and 120,620.60 is: 180,930.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,721.40 : 248,582.10 = 120,620.60 : x
  2. Step 2: Convert to fraction form
    165,721.40/248,582.10 = 120,620.60/x
  3. Step 3: Cross multiply
    165,721.40x = 248,582.10 × 120,620.60
  4. Step 4: Simplify right side
    165,721.40x = 29,984,122,051.26
  5. Step 5: Solve for x
    x = 29,984,122,051.26/165,721.40
  6. Step 6: Final answer
    x = 180,930.90

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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.