Home / 201,922.18-278,654.53-111,281.47

Finding the Fourth Proportional to 201,922.18, 278,654.53 and 111,281.47

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Solution

The fourth proportional to 201,922.18, 278,654.53 and 111,281.47 is: 153,569.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,922.18 : 278,654.53 = 111,281.47 : x
  2. Step 2: Convert to fraction form
    201,922.18/278,654.53 = 111,281.47/x
  3. Step 3: Cross multiply
    201,922.18x = 278,654.53 × 111,281.47
  4. Step 4: Simplify right side
    201,922.18x = 31,009,085,720.56
  5. Step 5: Solve for x
    x = 31,009,085,720.56/201,922.18
  6. Step 6: Final answer
    x = 153,569.49

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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.