Home / 101,152.70-151,729.05-82,125.80

Finding the Fourth Proportional to 101,152.70, 151,729.05 and 82,125.80

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Solution

The fourth proportional to 101,152.70, 151,729.05 and 82,125.80 is: 123,188.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,152.70 : 151,729.05 = 82,125.80 : x
  2. Step 2: Convert to fraction form
    101,152.70/151,729.05 = 82,125.80/x
  3. Step 3: Cross multiply
    101,152.70x = 151,729.05 × 82,125.80
  4. Step 4: Simplify right side
    101,152.70x = 12,460,869,614.49
  5. Step 5: Solve for x
    x = 12,460,869,614.49/101,152.70
  6. Step 6: Final answer
    x = 123,188.70

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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.