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Finding the Fourth Proportional to 104,002.40, 143,494.80 and 66,245.60

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Solution

The fourth proportional to 104,002.40, 143,494.80 and 66,245.60 is: 91,400.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,002.40 : 143,494.80 = 66,245.60 : x
  2. Step 2: Convert to fraction form
    104,002.40/143,494.80 = 66,245.60/x
  3. Step 3: Cross multiply
    104,002.40x = 143,494.80 × 66,245.60
  4. Step 4: Simplify right side
    104,002.40x = 9,505,899,122.88
  5. Step 5: Solve for x
    x = 9,505,899,122.88/104,002.40
  6. Step 6: Final answer
    x = 91,400.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.