Home / 189,771.76-261,841.88-113,315.60

Finding the Fourth Proportional to 189,771.76, 261,841.88 and 113,315.60

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Solution

The fourth proportional to 189,771.76, 261,841.88 and 113,315.60 is: 156,349.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,771.76 : 261,841.88 = 113,315.60 : x
  2. Step 2: Convert to fraction form
    189,771.76/261,841.88 = 113,315.60/x
  3. Step 3: Cross multiply
    189,771.76x = 261,841.88 × 113,315.60
  4. Step 4: Simplify right side
    189,771.76x = 29,670,769,737.33
  5. Step 5: Solve for x
    x = 29,670,769,737.33/189,771.76
  6. Step 6: Final answer
    x = 156,349.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.