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Finding the Fourth Proportional to 201,860.90, 278,600.79 and 117,027.02

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Solution

The fourth proportional to 201,860.90, 278,600.79 and 117,027.02 is: 161,516.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,860.90 : 278,600.79 = 117,027.02 : x
  2. Step 2: Convert to fraction form
    201,860.90/278,600.79 = 117,027.02/x
  3. Step 3: Cross multiply
    201,860.90x = 278,600.79 × 117,027.02
  4. Step 4: Simplify right side
    201,860.90x = 32,603,820,223.35
  5. Step 5: Solve for x
    x = 32,603,820,223.35/201,860.90
  6. Step 6: Final answer
    x = 161,516.27

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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.