Home / 201,753.12-278,416.96-111,107.20

Finding the Fourth Proportional to 201,753.12, 278,416.96 and 111,107.20

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Solution

The fourth proportional to 201,753.12, 278,416.96 and 111,107.20 is: 153,326.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,753.12 : 278,416.96 = 111,107.20 : x
  2. Step 2: Convert to fraction form
    201,753.12/278,416.96 = 111,107.20/x
  3. Step 3: Cross multiply
    201,753.12x = 278,416.96 × 111,107.20
  4. Step 4: Simplify right side
    201,753.12x = 30,934,128,858.11
  5. Step 5: Solve for x
    x = 30,934,128,858.11/201,753.12
  6. Step 6: Final answer
    x = 153,326.64

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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.