Home / 210,698.05-290,842.37-138,105.62

Finding the Fourth Proportional to 210,698.05, 290,842.37 and 138,105.62

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Solution

The fourth proportional to 210,698.05, 290,842.37 and 138,105.62 is: 190,637.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,698.05 : 290,842.37 = 138,105.62 : x
  2. Step 2: Convert to fraction form
    210,698.05/290,842.37 = 138,105.62/x
  3. Step 3: Cross multiply
    210,698.05x = 290,842.37 × 138,105.62
  4. Step 4: Simplify right side
    210,698.05x = 40,166,965,831.12
  5. Step 5: Solve for x
    x = 40,166,965,831.12/210,698.05
  6. Step 6: Final answer
    x = 190,637.58

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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.