Home / 201,678.21-278,305.36-111,016.46

Finding the Fourth Proportional to 201,678.21, 278,305.36 and 111,016.46

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Solution

The fourth proportional to 201,678.21, 278,305.36 and 111,016.46 is: 153,196.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,678.21 : 278,305.36 = 111,016.46 : x
  2. Step 2: Convert to fraction form
    201,678.21/278,305.36 = 111,016.46/x
  3. Step 3: Cross multiply
    201,678.21x = 278,305.36 × 111,016.46
  4. Step 4: Simplify right side
    201,678.21x = 30,896,476,284.45
  5. Step 5: Solve for x
    x = 30,896,476,284.45/201,678.21
  6. Step 6: Final answer
    x = 153,196.90

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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.