Home / 122,785.20-184,615.20-103,539.60

Finding the Fourth Proportional to 122,785.20, 184,615.20 and 103,539.60

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Solution

The fourth proportional to 122,785.20, 184,615.20 and 103,539.60 is: 155,678.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,785.20 : 184,615.20 = 103,539.60 : x
  2. Step 2: Convert to fraction form
    122,785.20/184,615.20 = 103,539.60/x
  3. Step 3: Cross multiply
    122,785.20x = 184,615.20 × 103,539.60
  4. Step 4: Simplify right side
    122,785.20x = 19,114,983,961.92
  5. Step 5: Solve for x
    x = 19,114,983,961.92/122,785.20
  6. Step 6: Final answer
    x = 155,678.24

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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.