Home / 201,928.84-278,663.70-111,288.07

Finding the Fourth Proportional to 201,928.84, 278,663.70 and 111,288.07

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Solution

The fourth proportional to 201,928.84, 278,663.70 and 111,288.07 is: 153,578.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,928.84 : 278,663.70 = 111,288.07 : x
  2. Step 2: Convert to fraction form
    201,928.84/278,663.70 = 111,288.07/x
  3. Step 3: Cross multiply
    201,928.84x = 278,663.70 × 111,288.07
  4. Step 4: Simplify right side
    201,928.84x = 31,011,945,352.06
  5. Step 5: Solve for x
    x = 31,011,945,352.06/201,928.84
  6. Step 6: Final answer
    x = 153,578.58

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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.