Home / 165,580.20-248,200.20-81,210.60

Finding the Fourth Proportional to 165,580.20, 248,200.20 and 81,210.60

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Solution

The fourth proportional to 165,580.20, 248,200.20 and 81,210.60 is: 121,732.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,580.20 : 248,200.20 = 81,210.60 : x
  2. Step 2: Convert to fraction form
    165,580.20/248,200.20 = 81,210.60/x
  3. Step 3: Cross multiply
    165,580.20x = 248,200.20 × 81,210.60
  4. Step 4: Simplify right side
    165,580.20x = 20,156,487,162.12
  5. Step 5: Solve for x
    x = 20,156,487,162.12/165,580.20
  6. Step 6: Final answer
    x = 121,732.47

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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.