Home / 209,731.20-314,801.60-104,668.80

Finding the Fourth Proportional to 209,731.20, 314,801.60 and 104,668.80

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Solution

The fourth proportional to 209,731.20, 314,801.60 and 104,668.80 is: 157,105.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,731.20 : 314,801.60 = 104,668.80 : x
  2. Step 2: Convert to fraction form
    209,731.20/314,801.60 = 104,668.80/x
  3. Step 3: Cross multiply
    209,731.20x = 314,801.60 × 104,668.80
  4. Step 4: Simplify right side
    209,731.20x = 32,949,905,710.08
  5. Step 5: Solve for x
    x = 32,949,905,710.08/209,731.20
  6. Step 6: Final answer
    x = 157,105.41

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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.