Home / 209,153.48-313,749.66-68,913.32

Finding the Fourth Proportional to 209,153.48, 313,749.66 and 68,913.32

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Solution

The fourth proportional to 209,153.48, 313,749.66 and 68,913.32 is: 103,376.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,153.48 : 313,749.66 = 68,913.32 : x
  2. Step 2: Convert to fraction form
    209,153.48/313,749.66 = 68,913.32/x
  3. Step 3: Cross multiply
    209,153.48x = 313,749.66 × 68,913.32
  4. Step 4: Simplify right side
    209,153.48x = 21,621,530,719.47
  5. Step 5: Solve for x
    x = 21,621,530,719.47/209,153.48
  6. Step 6: Final answer
    x = 103,376.39

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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.