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Finding the Fourth Proportional to 100,234.80, 150,128.64 and 55,814.40

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Solution

The fourth proportional to 100,234.80, 150,128.64 and 55,814.40 is: 83,597.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,234.80 : 150,128.64 = 55,814.40 : x
  2. Step 2: Convert to fraction form
    100,234.80/150,128.64 = 55,814.40/x
  3. Step 3: Cross multiply
    100,234.80x = 150,128.64 × 55,814.40
  4. Step 4: Simplify right side
    100,234.80x = 8,379,339,964.42
  5. Step 5: Solve for x
    x = 8,379,339,964.42/100,234.80
  6. Step 6: Final answer
    x = 83,597.11

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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.