Home / 201,518.55-278,135.37-115,535.30

Finding the Fourth Proportional to 201,518.55, 278,135.37 and 115,535.30

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Solution

The fourth proportional to 201,518.55, 278,135.37 and 115,535.30 is: 159,461.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,518.55 : 278,135.37 = 115,535.30 : x
  2. Step 2: Convert to fraction form
    201,518.55/278,135.37 = 115,535.30/x
  3. Step 3: Cross multiply
    201,518.55x = 278,135.37 × 115,535.30
  4. Step 4: Simplify right side
    201,518.55x = 32,134,452,022.88
  5. Step 5: Solve for x
    x = 32,134,452,022.88/201,518.55
  6. Step 6: Final answer
    x = 159,461.51

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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.