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Finding the Fourth Proportional to 120,568.05, 180,779.18 and 53,995.77

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Solution

The fourth proportional to 120,568.05, 180,779.18 and 53,995.77 is: 80,961.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,568.05 : 180,779.18 = 53,995.77 : x
  2. Step 2: Convert to fraction form
    120,568.05/180,779.18 = 53,995.77/x
  3. Step 3: Cross multiply
    120,568.05x = 180,779.18 × 53,995.77
  4. Step 4: Simplify right side
    120,568.05x = 9,761,310,754.09
  5. Step 5: Solve for x
    x = 9,761,310,754.09/120,568.05
  6. Step 6: Final answer
    x = 80,961.01

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1.5x scale

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.