Home / 128,126.45-190,874.25-122,369.24

Finding the Fourth Proportional to 128,126.45, 190,874.25 and 122,369.24

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Solution

The fourth proportional to 128,126.45, 190,874.25 and 122,369.24 is: 182,297.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,126.45 : 190,874.25 = 122,369.24 : x
  2. Step 2: Convert to fraction form
    128,126.45/190,874.25 = 122,369.24/x
  3. Step 3: Cross multiply
    128,126.45x = 190,874.25 × 122,369.24
  4. Step 4: Simplify right side
    128,126.45x = 23,357,135,953.70
  5. Step 5: Solve for x
    x = 23,357,135,953.70/128,126.45
  6. Step 6: Final answer
    x = 182,297.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.