Home / 133,621.55-200,287.40-66,900.77

Finding the Fourth Proportional to 133,621.55, 200,287.40 and 66,900.77

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Solution

The fourth proportional to 133,621.55, 200,287.40 and 66,900.77 is: 100,278.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,621.55 : 200,287.40 = 66,900.77 : x
  2. Step 2: Convert to fraction form
    133,621.55/200,287.40 = 66,900.77/x
  3. Step 3: Cross multiply
    133,621.55x = 200,287.40 × 66,900.77
  4. Step 4: Simplify right side
    133,621.55x = 13,399,379,945.36
  5. Step 5: Solve for x
    x = 13,399,379,945.36/133,621.55
  6. Step 6: Final answer
    x = 100,278.59

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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.