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Finding the Fourth Proportional to 120,007.56, 179,620.70 and 88,405.20

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Solution

The fourth proportional to 120,007.56, 179,620.70 and 88,405.20 is: 132,320.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,007.56 : 179,620.70 = 88,405.20 : x
  2. Step 2: Convert to fraction form
    120,007.56/179,620.70 = 88,405.20/x
  3. Step 3: Cross multiply
    120,007.56x = 179,620.70 × 88,405.20
  4. Step 4: Simplify right side
    120,007.56x = 15,879,403,907.64
  5. Step 5: Solve for x
    x = 15,879,403,907.64/120,007.56
  6. Step 6: Final answer
    x = 132,320.03

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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.