Home / 129,764.30-179,087.25-78,765.27

Finding the Fourth Proportional to 129,764.30, 179,087.25 and 78,765.27

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Solution

The fourth proportional to 129,764.30, 179,087.25 and 78,765.27 is: 108,703.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,764.30 : 179,087.25 = 78,765.27 : x
  2. Step 2: Convert to fraction form
    129,764.30/179,087.25 = 78,765.27/x
  3. Step 3: Cross multiply
    129,764.30x = 179,087.25 × 78,765.27
  4. Step 4: Simplify right side
    129,764.30x = 14,105,855,599.81
  5. Step 5: Solve for x
    x = 14,105,855,599.81/129,764.30
  6. Step 6: Final answer
    x = 108,703.67

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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.