Home / 217,821.53-300,558.44-136,140.15

Finding the Fourth Proportional to 217,821.53, 300,558.44 and 136,140.15

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Solution

The fourth proportional to 217,821.53, 300,558.44 and 136,140.15 is: 187,851.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,821.53 : 300,558.44 = 136,140.15 : x
  2. Step 2: Convert to fraction form
    217,821.53/300,558.44 = 136,140.15/x
  3. Step 3: Cross multiply
    217,821.53x = 300,558.44 × 136,140.15
  4. Step 4: Simplify right side
    217,821.53x = 40,918,068,921.87
  5. Step 5: Solve for x
    x = 40,918,068,921.87/217,821.53
  6. Step 6: Final answer
    x = 187,851.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.