Home / 120,183.29-180,147.80-45,271.02

Finding the Fourth Proportional to 120,183.29, 180,147.80 and 45,271.02

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Solution

The fourth proportional to 120,183.29, 180,147.80 and 45,271.02 is: 67,858.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,183.29 : 180,147.80 = 45,271.02 : x
  2. Step 2: Convert to fraction form
    120,183.29/180,147.80 = 45,271.02/x
  3. Step 3: Cross multiply
    120,183.29x = 180,147.80 × 45,271.02
  4. Step 4: Simplify right side
    120,183.29x = 8,155,474,656.76
  5. Step 5: Solve for x
    x = 8,155,474,656.76/120,183.29
  6. Step 6: Final answer
    x = 67,858.64

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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.