Home / 209,637.78-314,505.81-69,396.36

Finding the Fourth Proportional to 209,637.78, 314,505.81 and 69,396.36

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Solution

The fourth proportional to 209,637.78, 314,505.81 and 69,396.36 is: 104,110.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,637.78 : 314,505.81 = 69,396.36 : x
  2. Step 2: Convert to fraction form
    209,637.78/314,505.81 = 69,396.36/x
  3. Step 3: Cross multiply
    209,637.78x = 314,505.81 × 69,396.36
  4. Step 4: Simplify right side
    209,637.78x = 21,825,558,412.85
  5. Step 5: Solve for x
    x = 21,825,558,412.85/209,637.78
  6. Step 6: Final answer
    x = 104,110.81

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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.