Home / 201,929.34-278,664.39-111,288.57

Finding the Fourth Proportional to 201,929.34, 278,664.39 and 111,288.57

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Solution

The fourth proportional to 201,929.34, 278,664.39 and 111,288.57 is: 153,579.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,929.34 : 278,664.39 = 111,288.57 : x
  2. Step 2: Convert to fraction form
    201,929.34/278,664.39 = 111,288.57/x
  3. Step 3: Cross multiply
    201,929.34x = 278,664.39 × 111,288.57
  4. Step 4: Simplify right side
    201,929.34x = 31,012,161,473.02
  5. Step 5: Solve for x
    x = 31,012,161,473.02/201,929.34
  6. Step 6: Final answer
    x = 153,579.27

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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.