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Finding the Fourth Proportional to 113,960.40, 170,940.60 and 76,635.60

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Solution

The fourth proportional to 113,960.40, 170,940.60 and 76,635.60 is: 114,953.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,960.40 : 170,940.60 = 76,635.60 : x
  2. Step 2: Convert to fraction form
    113,960.40/170,940.60 = 76,635.60/x
  3. Step 3: Cross multiply
    113,960.40x = 170,940.60 × 76,635.60
  4. Step 4: Simplify right side
    113,960.40x = 13,100,135,445.36
  5. Step 5: Solve for x
    x = 13,100,135,445.36/113,960.40
  6. Step 6: Final answer
    x = 114,953.40

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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.