Home / 90,304.98-135,321.39-80,461.86

Finding the Fourth Proportional to 90,304.98, 135,321.39 and 80,461.86

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Solution

The fourth proportional to 90,304.98, 135,321.39 and 80,461.86 is: 120,571.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,304.98 : 135,321.39 = 80,461.86 : x
  2. Step 2: Convert to fraction form
    90,304.98/135,321.39 = 80,461.86/x
  3. Step 3: Cross multiply
    90,304.98x = 135,321.39 × 80,461.86
  4. Step 4: Simplify right side
    90,304.98x = 10,888,210,737.19
  5. Step 5: Solve for x
    x = 10,888,210,737.19/90,304.98
  6. Step 6: Final answer
    x = 120,571.54

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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.