Home / 210,736.91-290,816.93-115,243.67

Finding the Fourth Proportional to 210,736.91, 290,816.93 and 115,243.67

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Solution

The fourth proportional to 210,736.91, 290,816.93 and 115,243.67 is: 159,036.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,736.91 : 290,816.93 = 115,243.67 : x
  2. Step 2: Convert to fraction form
    210,736.91/290,816.93 = 115,243.67/x
  3. Step 3: Cross multiply
    210,736.91x = 290,816.93 × 115,243.67
  4. Step 4: Simplify right side
    210,736.91x = 33,514,809,735.11
  5. Step 5: Solve for x
    x = 33,514,809,735.11/210,736.91
  6. Step 6: Final answer
    x = 159,036.26

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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.