Home / 156,579.60-234,942.30-81,784.20

Finding the Fourth Proportional to 156,579.60, 234,942.30 and 81,784.20

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Solution

The fourth proportional to 156,579.60, 234,942.30 and 81,784.20 is: 122,714.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,579.60 : 234,942.30 = 81,784.20 : x
  2. Step 2: Convert to fraction form
    156,579.60/234,942.30 = 81,784.20/x
  3. Step 3: Cross multiply
    156,579.60x = 234,942.30 × 81,784.20
  4. Step 4: Simplify right side
    156,579.60x = 19,214,568,051.66
  5. Step 5: Solve for x
    x = 19,214,568,051.66/156,579.60
  6. Step 6: Final answer
    x = 122,714.38

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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.