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Finding the Fourth Proportional to 133,509.60, 200,215.80 and 66,927.60

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Solution

The fourth proportional to 133,509.60, 200,215.80 and 66,927.60 is: 100,367.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,509.60 : 200,215.80 = 66,927.60 : x
  2. Step 2: Convert to fraction form
    133,509.60/200,215.80 = 66,927.60/x
  3. Step 3: Cross multiply
    133,509.60x = 200,215.80 × 66,927.60
  4. Step 4: Simplify right side
    133,509.60x = 13,399,962,976.08
  5. Step 5: Solve for x
    x = 13,399,962,976.08/133,509.60
  6. Step 6: Final answer
    x = 100,367.04

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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.