Home / 122,021.21-168,389.34-68,306.33

Finding the Fourth Proportional to 122,021.21, 168,389.34 and 68,306.33

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Solution

The fourth proportional to 122,021.21, 168,389.34 and 68,306.33 is: 94,262.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,021.21 : 168,389.34 = 68,306.33 : x
  2. Step 2: Convert to fraction form
    122,021.21/168,389.34 = 68,306.33/x
  3. Step 3: Cross multiply
    122,021.21x = 168,389.34 × 68,306.33
  4. Step 4: Simplify right side
    122,021.21x = 11,502,057,826.52
  5. Step 5: Solve for x
    x = 11,502,057,826.52/122,021.21
  6. Step 6: Final answer
    x = 94,262.77

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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.