Home / 120,747.36-180,885.42-79,068

Finding the Fourth Proportional to 120,747.36, 180,885.42 and 79,068

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Solution

The fourth proportional to 120,747.36, 180,885.42 and 79,068 is: 118,447.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,747.36 : 180,885.42 = 79,068 : x
  2. Step 2: Convert to fraction form
    120,747.36/180,885.42 = 79,068/x
  3. Step 3: Cross multiply
    120,747.36x = 180,885.42 × 79,068
  4. Step 4: Simplify right side
    120,747.36x = 14,302,248,388.56
  5. Step 5: Solve for x
    x = 14,302,248,388.56/120,747.36
  6. Step 6: Final answer
    x = 118,447.71

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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.