Home / 180,138.09-270,211.89-78,884.04

Finding the Fourth Proportional to 180,138.09, 270,211.89 and 78,884.04

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Solution

The fourth proportional to 180,138.09, 270,211.89 and 78,884.04 is: 118,328.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,138.09 : 270,211.89 = 78,884.04 : x
  2. Step 2: Convert to fraction form
    180,138.09/270,211.89 = 78,884.04/x
  3. Step 3: Cross multiply
    180,138.09x = 270,211.89 × 78,884.04
  4. Step 4: Simplify right side
    180,138.09x = 21,315,406,144.45
  5. Step 5: Solve for x
    x = 21,315,406,144.45/180,138.09
  6. Step 6: Final answer
    x = 118,328.15

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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.