Home / 120,102.53-180,028.58-45,171.05

Finding the Fourth Proportional to 120,102.53, 180,028.58 and 45,171.05

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Solution

The fourth proportional to 120,102.53, 180,028.58 and 45,171.05 is: 67,709.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,102.53 : 180,028.58 = 45,171.05 : x
  2. Step 2: Convert to fraction form
    120,102.53/180,028.58 = 45,171.05/x
  3. Step 3: Cross multiply
    120,102.53x = 180,028.58 × 45,171.05
  4. Step 4: Simplify right side
    120,102.53x = 8,132,078,862.61
  5. Step 5: Solve for x
    x = 8,132,078,862.61/120,102.53
  6. Step 6: Final answer
    x = 67,709.47

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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.