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Finding the Fourth Proportional to 201,051.90, 301,140.45 and 122,028.30

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Solution

The fourth proportional to 201,051.90, 301,140.45 and 122,028.30 is: 182,776.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,051.90 : 301,140.45 = 122,028.30 : x
  2. Step 2: Convert to fraction form
    201,051.90/301,140.45 = 122,028.30/x
  3. Step 3: Cross multiply
    201,051.90x = 301,140.45 × 122,028.30
  4. Step 4: Simplify right side
    201,051.90x = 36,747,657,174.74
  5. Step 5: Solve for x
    x = 36,747,657,174.74/201,051.90
  6. Step 6: Final answer
    x = 182,776.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.