Home / 230,135.78-345,321.91-102,139.76

Finding the Fourth Proportional to 230,135.78, 345,321.91 and 102,139.76

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Solution

The fourth proportional to 230,135.78, 345,321.91 and 102,139.76 is: 153,262.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,135.78 : 345,321.91 = 102,139.76 : x
  2. Step 2: Convert to fraction form
    230,135.78/345,321.91 = 102,139.76/x
  3. Step 3: Cross multiply
    230,135.78x = 345,321.91 × 102,139.76
  4. Step 4: Simplify right side
    230,135.78x = 35,271,096,742.64
  5. Step 5: Solve for x
    x = 35,271,096,742.64/230,135.78
  6. Step 6: Final answer
    x = 153,262.11

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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.