Home / 139,971.88-209,914.75-40,105.32

Finding the Fourth Proportional to 139,971.88, 209,914.75 and 40,105.32

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Solution

The fourth proportional to 139,971.88, 209,914.75 and 40,105.32 is: 60,145.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,971.88 : 209,914.75 = 40,105.32 : x
  2. Step 2: Convert to fraction form
    139,971.88/209,914.75 = 40,105.32/x
  3. Step 3: Cross multiply
    139,971.88x = 209,914.75 × 40,105.32
  4. Step 4: Simplify right side
    139,971.88x = 8,418,698,221.47
  5. Step 5: Solve for x
    x = 8,418,698,221.47/139,971.88
  6. Step 6: Final answer
    x = 60,145.64

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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.