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Finding the Fourth Proportional to 100,523.70, 150,566.85 and 80,840.70

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Solution

The fourth proportional to 100,523.70, 150,566.85 and 80,840.70 is: 121,085.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,523.70 : 150,566.85 = 80,840.70 : x
  2. Step 2: Convert to fraction form
    100,523.70/150,566.85 = 80,840.70/x
  3. Step 3: Cross multiply
    100,523.70x = 150,566.85 × 80,840.70
  4. Step 4: Simplify right side
    100,523.70x = 12,171,929,550.80
  5. Step 5: Solve for x
    x = 12,171,929,550.80/100,523.70
  6. Step 6: Final answer
    x = 121,085.17

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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.