Home / 120,003.55-180,005.33-100,757.95

Finding the Fourth Proportional to 120,003.55, 180,005.33 and 100,757.95

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Solution

The fourth proportional to 120,003.55, 180,005.33 and 100,757.95 is: 151,136.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,003.55 : 180,005.33 = 100,757.95 : x
  2. Step 2: Convert to fraction form
    120,003.55/180,005.33 = 100,757.95/x
  3. Step 3: Cross multiply
    120,003.55x = 180,005.33 × 100,757.95
  4. Step 4: Simplify right side
    120,003.55x = 18,136,967,536.08
  5. Step 5: Solve for x
    x = 18,136,967,536.08/120,003.55
  6. Step 6: Final answer
    x = 151,136.93

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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.