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Finding the Fourth Proportional to 143,455.60, 214,924.20 and 126,866.80

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Solution

The fourth proportional to 143,455.60, 214,924.20 and 126,866.80 is: 190,070.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,455.60 : 214,924.20 = 126,866.80 : x
  2. Step 2: Convert to fraction form
    143,455.60/214,924.20 = 126,866.80/x
  3. Step 3: Cross multiply
    143,455.60x = 214,924.20 × 126,866.80
  4. Step 4: Simplify right side
    143,455.60x = 27,266,745,496.56
  5. Step 5: Solve for x
    x = 27,266,745,496.56/143,455.60
  6. Step 6: Final answer
    x = 190,070.97

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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.