Home / 120,313.55-180,408.03-64,138.58

Finding the Fourth Proportional to 120,313.55, 180,408.03 and 64,138.58

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Solution

The fourth proportional to 120,313.55, 180,408.03 and 64,138.58 is: 96,174.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,313.55 : 180,408.03 = 64,138.58 : x
  2. Step 2: Convert to fraction form
    120,313.55/180,408.03 = 64,138.58/x
  3. Step 3: Cross multiply
    120,313.55x = 180,408.03 × 64,138.58
  4. Step 4: Simplify right side
    120,313.55x = 11,571,113,962.76
  5. Step 5: Solve for x
    x = 11,571,113,962.76/120,313.55
  6. Step 6: Final answer
    x = 96,174.65

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1.5x scale

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.