Home / 100,764.28-139,052.46-58,321.96

Finding the Fourth Proportional to 100,764.28, 139,052.46 and 58,321.96

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Solution

The fourth proportional to 100,764.28, 139,052.46 and 58,321.96 is: 80,483.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,764.28 : 139,052.46 = 58,321.96 : x
  2. Step 2: Convert to fraction form
    100,764.28/139,052.46 = 58,321.96/x
  3. Step 3: Cross multiply
    100,764.28x = 139,052.46 × 58,321.96
  4. Step 4: Simplify right side
    100,764.28x = 8,109,812,010.02
  5. Step 5: Solve for x
    x = 8,109,812,010.02/100,764.28
  6. Step 6: Final answer
    x = 80,483.00

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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.