Home / 100,928.02-139,280.02-55,604.96

Finding the Fourth Proportional to 100,928.02, 139,280.02 and 55,604.96

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Solution

The fourth proportional to 100,928.02, 139,280.02 and 55,604.96 is: 76,734.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,928.02 : 139,280.02 = 55,604.96 : x
  2. Step 2: Convert to fraction form
    100,928.02/139,280.02 = 55,604.96/x
  3. Step 3: Cross multiply
    100,928.02x = 139,280.02 × 55,604.96
  4. Step 4: Simplify right side
    100,928.02x = 7,744,659,940.90
  5. Step 5: Solve for x
    x = 7,744,659,940.90/100,928.02
  6. Step 6: Final answer
    x = 76,734.49

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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.