Home / 201,932.20-278,668.32-111,291.40

Finding the Fourth Proportional to 201,932.20, 278,668.32 and 111,291.40

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Solution

The fourth proportional to 201,932.20, 278,668.32 and 111,291.40 is: 153,583.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,932.20 : 278,668.32 = 111,291.40 : x
  2. Step 2: Convert to fraction form
    201,932.20/278,668.32 = 111,291.40/x
  3. Step 3: Cross multiply
    201,932.20x = 278,668.32 × 111,291.40
  4. Step 4: Simplify right side
    201,932.20x = 31,013,387,468.45
  5. Step 5: Solve for x
    x = 31,013,387,468.45/201,932.20
  6. Step 6: Final answer
    x = 153,583.17

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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.