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Finding the Fourth Proportional to 120,007.80, 179,817.30 and 102,511.80

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Solution

The fourth proportional to 120,007.80, 179,817.30 and 102,511.80 is: 153,601.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,007.80 : 179,817.30 = 102,511.80 : x
  2. Step 2: Convert to fraction form
    120,007.80/179,817.30 = 102,511.80/x
  3. Step 3: Cross multiply
    120,007.80x = 179,817.30 × 102,511.80
  4. Step 4: Simplify right side
    120,007.80x = 18,433,395,094.14
  5. Step 5: Solve for x
    x = 18,433,395,094.14/120,007.80
  6. Step 6: Final answer
    x = 153,601.64

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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.