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Finding the Fourth Proportional to 76,080.70, 113,563.63 and 67,102.80

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Solution

The fourth proportional to 76,080.70, 113,563.63 and 67,102.80 is: 100,162.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,080.70 : 113,563.63 = 67,102.80 : x
  2. Step 2: Convert to fraction form
    76,080.70/113,563.63 = 67,102.80/x
  3. Step 3: Cross multiply
    76,080.70x = 113,563.63 × 67,102.80
  4. Step 4: Simplify right side
    76,080.70x = 7,620,437,551.16
  5. Step 5: Solve for x
    x = 7,620,437,551.16/76,080.70
  6. Step 6: Final answer
    x = 100,162.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.