Home / 129,392.08-178,549.26-75,667.75

Finding the Fourth Proportional to 129,392.08, 178,549.26 and 75,667.75

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Solution

The fourth proportional to 129,392.08, 178,549.26 and 75,667.75 is: 104,414.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,392.08 : 178,549.26 = 75,667.75 : x
  2. Step 2: Convert to fraction form
    129,392.08/178,549.26 = 75,667.75/x
  3. Step 3: Cross multiply
    129,392.08x = 178,549.26 × 75,667.75
  4. Step 4: Simplify right side
    129,392.08x = 13,510,420,768.37
  5. Step 5: Solve for x
    x = 13,510,420,768.37/129,392.08
  6. Step 6: Final answer
    x = 104,414.59

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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.