Home / 120,153.30-180,211.05-75,643.80

Finding the Fourth Proportional to 120,153.30, 180,211.05 and 75,643.80

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Solution

The fourth proportional to 120,153.30, 180,211.05 and 75,643.80 is: 113,453.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,153.30 : 180,211.05 = 75,643.80 : x
  2. Step 2: Convert to fraction form
    120,153.30/180,211.05 = 75,643.80/x
  3. Step 3: Cross multiply
    120,153.30x = 180,211.05 × 75,643.80
  4. Step 4: Simplify right side
    120,153.30x = 13,631,848,623.99
  5. Step 5: Solve for x
    x = 13,631,848,623.99/120,153.30
  6. Step 6: Final answer
    x = 113,453.80

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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.