Home / 126,934.40-190,171.20-103,433.60

Finding the Fourth Proportional to 126,934.40, 190,171.20 and 103,433.60

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Solution

The fourth proportional to 126,934.40, 190,171.20 and 103,433.60 is: 154,962.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,934.40 : 190,171.20 = 103,433.60 : x
  2. Step 2: Convert to fraction form
    126,934.40/190,171.20 = 103,433.60/x
  3. Step 3: Cross multiply
    126,934.40x = 190,171.20 × 103,433.60
  4. Step 4: Simplify right side
    126,934.40x = 19,670,091,832.32
  5. Step 5: Solve for x
    x = 19,670,091,832.32/126,934.40
  6. Step 6: Final answer
    x = 154,962.66

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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.