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Finding the Fourth Proportional to 201,620.72, 278,273.40 and 116,745.68

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Solution

The fourth proportional to 201,620.72, 278,273.40 and 116,745.68 is: 161,130.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,620.72 : 278,273.40 = 116,745.68 : x
  2. Step 2: Convert to fraction form
    201,620.72/278,273.40 = 116,745.68/x
  3. Step 3: Cross multiply
    201,620.72x = 278,273.40 × 116,745.68
  4. Step 4: Simplify right side
    201,620.72x = 32,487,217,308.91
  5. Step 5: Solve for x
    x = 32,487,217,308.91/201,620.72
  6. Step 6: Final answer
    x = 161,130.35

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1.5x scale

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.