Home / 159,961.62-240,090.03-81,131.21

Finding the Fourth Proportional to 159,961.62, 240,090.03 and 81,131.21

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Solution

The fourth proportional to 159,961.62, 240,090.03 and 81,131.21 is: 121,771.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,961.62 : 240,090.03 = 81,131.21 : x
  2. Step 2: Convert to fraction form
    159,961.62/240,090.03 = 81,131.21/x
  3. Step 3: Cross multiply
    159,961.62x = 240,090.03 × 81,131.21
  4. Step 4: Simplify right side
    159,961.62x = 19,478,793,442.39
  5. Step 5: Solve for x
    x = 19,478,793,442.39/159,961.62
  6. Step 6: Final answer
    x = 121,771.67

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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.