Home / 120,974.10-181,497.60-85,982.10

Finding the Fourth Proportional to 120,974.10, 181,497.60 and 85,982.10

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Solution

The fourth proportional to 120,974.10, 181,497.60 and 85,982.10 is: 128,999.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,974.10 : 181,497.60 = 85,982.10 : x
  2. Step 2: Convert to fraction form
    120,974.10/181,497.60 = 85,982.10/x
  3. Step 3: Cross multiply
    120,974.10x = 181,497.60 × 85,982.10
  4. Step 4: Simplify right side
    120,974.10x = 15,605,544,792.96
  5. Step 5: Solve for x
    x = 15,605,544,792.96/120,974.10
  6. Step 6: Final answer
    x = 128,999.06

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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.