Home / 180,128.53-270,197.43-85,336.51

Finding the Fourth Proportional to 180,128.53, 270,197.43 and 85,336.51

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Solution

The fourth proportional to 180,128.53, 270,197.43 and 85,336.51 is: 128,006.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,128.53 : 270,197.43 = 85,336.51 : x
  2. Step 2: Convert to fraction form
    180,128.53/270,197.43 = 85,336.51/x
  3. Step 3: Cross multiply
    180,128.53x = 270,197.43 × 85,336.51
  4. Step 4: Simplify right side
    180,128.53x = 23,057,705,687.17
  5. Step 5: Solve for x
    x = 23,057,705,687.17/180,128.53
  6. Step 6: Final answer
    x = 128,006.96

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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.