Home / 209,085.06-313,321.41-103,693.53

Finding the Fourth Proportional to 209,085.06, 313,321.41 and 103,693.53

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Solution

The fourth proportional to 209,085.06, 313,321.41 and 103,693.53 is: 155,388.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,085.06 : 313,321.41 = 103,693.53 : x
  2. Step 2: Convert to fraction form
    209,085.06/313,321.41 = 103,693.53/x
  3. Step 3: Cross multiply
    209,085.06x = 313,321.41 × 103,693.53
  4. Step 4: Simplify right side
    209,085.06x = 32,489,403,027.48
  5. Step 5: Solve for x
    x = 32,489,403,027.48/209,085.06
  6. Step 6: Final answer
    x = 155,388.45

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1.5x scale

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.