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Finding the Fourth Proportional to 126,830.60, 190,245.90 and 124,987.40

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Solution

The fourth proportional to 126,830.60, 190,245.90 and 124,987.40 is: 187,481.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,830.60 : 190,245.90 = 124,987.40 : x
  2. Step 2: Convert to fraction form
    126,830.60/190,245.90 = 124,987.40/x
  3. Step 3: Cross multiply
    126,830.60x = 190,245.90 × 124,987.40
  4. Step 4: Simplify right side
    126,830.60x = 23,778,340,401.66
  5. Step 5: Solve for x
    x = 23,778,340,401.66/126,830.60
  6. Step 6: Final answer
    x = 187,481.10

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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.