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Finding the Fourth Proportional to 144,184.08, 198,978 and 80,526

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Solution

The fourth proportional to 144,184.08, 198,978 and 80,526 is: 111,128.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,184.08 : 198,978 = 80,526 : x
  2. Step 2: Convert to fraction form
    144,184.08/198,978 = 80,526/x
  3. Step 3: Cross multiply
    144,184.08x = 198,978 × 80,526
  4. Step 4: Simplify right side
    144,184.08x = 16,022,902,428
  5. Step 5: Solve for x
    x = 16,022,902,428/144,184.08
  6. Step 6: Final answer
    x = 111,128.10

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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.