Home / 201,918.65-302,921.07-100,771.11

Finding the Fourth Proportional to 201,918.65, 302,921.07 and 100,771.11

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Solution

The fourth proportional to 201,918.65, 302,921.07 and 100,771.11 is: 151,178.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,918.65 : 302,921.07 = 100,771.11 : x
  2. Step 2: Convert to fraction form
    201,918.65/302,921.07 = 100,771.11/x
  3. Step 3: Cross multiply
    201,918.65x = 302,921.07 × 100,771.11
  4. Step 4: Simplify right side
    201,918.65x = 30,525,692,940.36
  5. Step 5: Solve for x
    x = 30,525,692,940.36/201,918.65
  6. Step 6: Final answer
    x = 151,178.18

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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.