Home / 201,928.34-278,663.01-111,287.57

Finding the Fourth Proportional to 201,928.34, 278,663.01 and 111,287.57

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Solution

The fourth proportional to 201,928.34, 278,663.01 and 111,287.57 is: 153,577.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,928.34 : 278,663.01 = 111,287.57 : x
  2. Step 2: Convert to fraction form
    201,928.34/278,663.01 = 111,287.57/x
  3. Step 3: Cross multiply
    201,928.34x = 278,663.01 × 111,287.57
  4. Step 4: Simplify right side
    201,928.34x = 31,011,729,231.79
  5. Step 5: Solve for x
    x = 31,011,729,231.79/201,928.34
  6. Step 6: Final answer
    x = 153,577.89

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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.