Home / 156,380.21-234,895.26-126,428.30

Finding the Fourth Proportional to 156,380.21, 234,895.26 and 126,428.30

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Solution

The fourth proportional to 156,380.21, 234,895.26 and 126,428.30 is: 189,905.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,380.21 : 234,895.26 = 126,428.30 : x
  2. Step 2: Convert to fraction form
    156,380.21/234,895.26 = 126,428.30/x
  3. Step 3: Cross multiply
    156,380.21x = 234,895.26 × 126,428.30
  4. Step 4: Simplify right side
    156,380.21x = 29,697,408,399.86
  5. Step 5: Solve for x
    x = 29,697,408,399.86/156,380.21
  6. Step 6: Final answer
    x = 189,905.16

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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.