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Finding the Fourth Proportional to 180,503.88, 270,595 and 85,675.56

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Solution

The fourth proportional to 180,503.88, 270,595 and 85,675.56 is: 128,437.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,503.88 : 270,595 = 85,675.56 : x
  2. Step 2: Convert to fraction form
    180,503.88/270,595 = 85,675.56/x
  3. Step 3: Cross multiply
    180,503.88x = 270,595 × 85,675.56
  4. Step 4: Simplify right side
    180,503.88x = 23,183,378,158.20
  5. Step 5: Solve for x
    x = 23,183,378,158.20/180,503.88
  6. Step 6: Final answer
    x = 128,437.01

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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.