Home / 201,799.40-278,485.09-111,155.76

Finding the Fourth Proportional to 201,799.40, 278,485.09 and 111,155.76

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Solution

The fourth proportional to 201,799.40, 278,485.09 and 111,155.76 is: 153,396.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,799.40 : 278,485.09 = 111,155.76 : x
  2. Step 2: Convert to fraction form
    201,799.40/278,485.09 = 111,155.76/x
  3. Step 3: Cross multiply
    201,799.40x = 278,485.09 × 111,155.76
  4. Step 4: Simplify right side
    201,799.40x = 30,955,221,549.73
  5. Step 5: Solve for x
    x = 30,955,221,549.73/201,799.40
  6. Step 6: Final answer
    x = 153,396.01

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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.