Home / 245,660.91-339,018.63-138,234.69

Finding the Fourth Proportional to 245,660.91, 339,018.63 and 138,234.69

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Solution

The fourth proportional to 245,660.91, 339,018.63 and 138,234.69 is: 190,767.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,660.91 : 339,018.63 = 138,234.69 : x
  2. Step 2: Convert to fraction form
    245,660.91/339,018.63 = 138,234.69/x
  3. Step 3: Cross multiply
    245,660.91x = 339,018.63 × 138,234.69
  4. Step 4: Simplify right side
    245,660.91x = 46,864,135,222.27
  5. Step 5: Solve for x
    x = 46,864,135,222.27/245,660.91
  6. Step 6: Final answer
    x = 190,767.57

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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.