Home / 180,777.21-270,812.85-85,872.34

Finding the Fourth Proportional to 180,777.21, 270,812.85 and 85,872.34

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Solution

The fourth proportional to 180,777.21, 270,812.85 and 85,872.34 is: 128,640.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,777.21 : 270,812.85 = 85,872.34 : x
  2. Step 2: Convert to fraction form
    180,777.21/270,812.85 = 85,872.34/x
  3. Step 3: Cross multiply
    180,777.21x = 270,812.85 × 85,872.34
  4. Step 4: Simplify right side
    180,777.21x = 23,255,333,131.57
  5. Step 5: Solve for x
    x = 23,255,333,131.57/180,777.21
  6. Step 6: Final answer
    x = 128,640.85

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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.