Home / 126,946.72-190,499.16-115,121.86

Finding the Fourth Proportional to 126,946.72, 190,499.16 and 115,121.86

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Solution

The fourth proportional to 126,946.72, 190,499.16 and 115,121.86 is: 172,754.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,946.72 : 190,499.16 = 115,121.86 : x
  2. Step 2: Convert to fraction form
    126,946.72/190,499.16 = 115,121.86/x
  3. Step 3: Cross multiply
    126,946.72x = 190,499.16 × 115,121.86
  4. Step 4: Simplify right side
    126,946.72x = 21,930,617,627.64
  5. Step 5: Solve for x
    x = 21,930,617,627.64/126,946.72
  6. Step 6: Final answer
    x = 172,754.50

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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.