Home / 120,328.76-180,596.82-83,418.68

Finding the Fourth Proportional to 120,328.76, 180,596.82 and 83,418.68

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Solution

The fourth proportional to 120,328.76, 180,596.82 and 83,418.68 is: 125,199.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,328.76 : 180,596.82 = 83,418.68 : x
  2. Step 2: Convert to fraction form
    120,328.76/180,596.82 = 83,418.68/x
  3. Step 3: Cross multiply
    120,328.76x = 180,596.82 × 83,418.68
  4. Step 4: Simplify right side
    120,328.76x = 15,065,148,336.60
  5. Step 5: Solve for x
    x = 15,065,148,336.60/120,328.76
  6. Step 6: Final answer
    x = 125,199.90

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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.