Home / 129,181.56-193,667.76-40,389.36

Finding the Fourth Proportional to 129,181.56, 193,667.76 and 40,389.36

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Solution

The fourth proportional to 129,181.56, 193,667.76 and 40,389.36 is: 60,551.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,181.56 : 193,667.76 = 40,389.36 : x
  2. Step 2: Convert to fraction form
    129,181.56/193,667.76 = 40,389.36/x
  3. Step 3: Cross multiply
    129,181.56x = 193,667.76 × 40,389.36
  4. Step 4: Simplify right side
    129,181.56x = 7,822,116,879.03
  5. Step 5: Solve for x
    x = 7,822,116,879.03/129,181.56
  6. Step 6: Final answer
    x = 60,551.34

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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.