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Finding the Fourth Proportional to 201,004.90, 301,069.95 and 121,981.30

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Solution

The fourth proportional to 201,004.90, 301,069.95 and 121,981.30 is: 182,706.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,004.90 : 301,069.95 = 121,981.30 : x
  2. Step 2: Convert to fraction form
    201,004.90/301,069.95 = 121,981.30/x
  3. Step 3: Cross multiply
    201,004.90x = 301,069.95 × 121,981.30
  4. Step 4: Simplify right side
    201,004.90x = 36,724,903,891.94
  5. Step 5: Solve for x
    x = 36,724,903,891.94/201,004.90
  6. Step 6: Final answer
    x = 182,706.51

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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.