Home / 156,638.21-234,661.39-121,405.37

Finding the Fourth Proportional to 156,638.21, 234,661.39 and 121,405.37

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Solution

The fourth proportional to 156,638.21, 234,661.39 and 121,405.37 is: 181,878.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,638.21 : 234,661.39 = 121,405.37 : x
  2. Step 2: Convert to fraction form
    156,638.21/234,661.39 = 121,405.37/x
  3. Step 3: Cross multiply
    156,638.21x = 234,661.39 × 121,405.37
  4. Step 4: Simplify right side
    156,638.21x = 28,489,151,400.84
  5. Step 5: Solve for x
    x = 28,489,151,400.84/156,638.21
  6. Step 6: Final answer
    x = 181,878.69

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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.