Home / 120,144.10-180,268.89-57,009.86

Finding the Fourth Proportional to 120,144.10, 180,268.89 and 57,009.86

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Solution

The fourth proportional to 120,144.10, 180,268.89 and 57,009.86 is: 85,539.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,144.10 : 180,268.89 = 57,009.86 : x
  2. Step 2: Convert to fraction form
    120,144.10/180,268.89 = 57,009.86/x
  3. Step 3: Cross multiply
    120,144.10x = 180,268.89 × 57,009.86
  4. Step 4: Simplify right side
    120,144.10x = 10,277,104,181.26
  5. Step 5: Solve for x
    x = 10,277,104,181.26/120,144.10
  6. Step 6: Final answer
    x = 85,539.82

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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.