Home / 129,429.37-178,569.72-75,676.33

Finding the Fourth Proportional to 129,429.37, 178,569.72 and 75,676.33

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Solution

The fourth proportional to 129,429.37, 178,569.72 and 75,676.33 is: 104,408.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,429.37 : 178,569.72 = 75,676.33 : x
  2. Step 2: Convert to fraction form
    129,429.37/178,569.72 = 75,676.33/x
  3. Step 3: Cross multiply
    129,429.37x = 178,569.72 × 75,676.33
  4. Step 4: Simplify right side
    129,429.37x = 13,513,501,058.73
  5. Step 5: Solve for x
    x = 13,513,501,058.73/129,429.37
  6. Step 6: Final answer
    x = 104,408.30

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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.