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Finding the Fourth Proportional to 101,145.70, 151,718.55 and 82,118.80

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Solution

The fourth proportional to 101,145.70, 151,718.55 and 82,118.80 is: 123,178.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,145.70 : 151,718.55 = 82,118.80 : x
  2. Step 2: Convert to fraction form
    101,145.70/151,718.55 = 82,118.80/x
  3. Step 3: Cross multiply
    101,145.70x = 151,718.55 × 82,118.80
  4. Step 4: Simplify right side
    101,145.70x = 12,458,945,263.74
  5. Step 5: Solve for x
    x = 12,458,945,263.74/101,145.70
  6. Step 6: Final answer
    x = 123,178.20

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1.5x scale

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.