Home / 108,768.21-150,099.24-61,021.54

Finding the Fourth Proportional to 108,768.21, 150,099.24 and 61,021.54

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Solution

The fourth proportional to 108,768.21, 150,099.24 and 61,021.54 is: 84,209.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,768.21 : 150,099.24 = 61,021.54 : x
  2. Step 2: Convert to fraction form
    108,768.21/150,099.24 = 61,021.54/x
  3. Step 3: Cross multiply
    108,768.21x = 150,099.24 × 61,021.54
  4. Step 4: Simplify right side
    108,768.21x = 9,159,286,777.63
  5. Step 5: Solve for x
    x = 9,159,286,777.63/108,768.21
  6. Step 6: Final answer
    x = 84,209.23

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1.5x scale

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.