Home / 123,408.64-170,303.68-66,819.84

Finding the Fourth Proportional to 123,408.64, 170,303.68 and 66,819.84

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Solution

The fourth proportional to 123,408.64, 170,303.68 and 66,819.84 is: 92,211.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,408.64 : 170,303.68 = 66,819.84 : x
  2. Step 2: Convert to fraction form
    123,408.64/170,303.68 = 66,819.84/x
  3. Step 3: Cross multiply
    123,408.64x = 170,303.68 × 66,819.84
  4. Step 4: Simplify right side
    123,408.64x = 11,379,664,649.01
  5. Step 5: Solve for x
    x = 11,379,664,649.01/123,408.64
  6. Step 6: Final answer
    x = 92,211.25

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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.