Home / 156,381.21-234,896.76-126,429.30

Finding the Fourth Proportional to 156,381.21, 234,896.76 and 126,429.30

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Solution

The fourth proportional to 156,381.21, 234,896.76 and 126,429.30 is: 189,906.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,381.21 : 234,896.76 = 126,429.30 : x
  2. Step 2: Convert to fraction form
    156,381.21/234,896.76 = 126,429.30/x
  3. Step 3: Cross multiply
    156,381.21x = 234,896.76 × 126,429.30
  4. Step 4: Simplify right side
    156,381.21x = 29,697,832,939.07
  5. Step 5: Solve for x
    x = 29,697,832,939.07/156,381.21
  6. Step 6: Final answer
    x = 189,906.66

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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.