Home / 100,968.44-139,331.46-58,540.76

Finding the Fourth Proportional to 100,968.44, 139,331.46 and 58,540.76

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Solution

The fourth proportional to 100,968.44, 139,331.46 and 58,540.76 is: 80,783.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,968.44 : 139,331.46 = 58,540.76 : x
  2. Step 2: Convert to fraction form
    100,968.44/139,331.46 = 58,540.76/x
  3. Step 3: Cross multiply
    100,968.44x = 139,331.46 × 58,540.76
  4. Step 4: Simplify right side
    100,968.44x = 8,156,569,560.31
  5. Step 5: Solve for x
    x = 8,156,569,560.31/100,968.44
  6. Step 6: Final answer
    x = 80,783.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.