Home / 126,912.20-190,368.30-115,248.20

Finding the Fourth Proportional to 126,912.20, 190,368.30 and 115,248.20

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Solution

The fourth proportional to 126,912.20, 190,368.30 and 115,248.20 is: 172,872.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,912.20 : 190,368.30 = 115,248.20 : x
  2. Step 2: Convert to fraction form
    126,912.20/190,368.30 = 115,248.20/x
  3. Step 3: Cross multiply
    126,912.20x = 190,368.30 × 115,248.20
  4. Step 4: Simplify right side
    126,912.20x = 21,939,603,912.06
  5. Step 5: Solve for x
    x = 21,939,603,912.06/126,912.20
  6. Step 6: Final answer
    x = 172,872.30

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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.