Home / 109,399.34-164,128.19-39,279.26

Finding the Fourth Proportional to 109,399.34, 164,128.19 and 39,279.26

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Solution

The fourth proportional to 109,399.34, 164,128.19 and 39,279.26 is: 58,929.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,399.34 : 164,128.19 = 39,279.26 : x
  2. Step 2: Convert to fraction form
    109,399.34/164,128.19 = 39,279.26/x
  3. Step 3: Cross multiply
    109,399.34x = 164,128.19 × 39,279.26
  4. Step 4: Simplify right side
    109,399.34x = 6,446,834,062.26
  5. Step 5: Solve for x
    x = 6,446,834,062.26/109,399.34
  6. Step 6: Final answer
    x = 58,929.37

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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.