Home / 86,245.71-129,196.34-68,506.41

Finding the Fourth Proportional to 86,245.71, 129,196.34 and 68,506.41

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Solution

The fourth proportional to 86,245.71, 129,196.34 and 68,506.41 is: 102,622.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,245.71 : 129,196.34 = 68,506.41 : x
  2. Step 2: Convert to fraction form
    86,245.71/129,196.34 = 68,506.41/x
  3. Step 3: Cross multiply
    86,245.71x = 129,196.34 × 68,506.41
  4. Step 4: Simplify right side
    86,245.71x = 8,850,777,303.34
  5. Step 5: Solve for x
    x = 8,850,777,303.34/86,245.71
  6. Step 6: Final answer
    x = 102,622.81

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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.