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Finding the Fourth Proportional to 143,205.40, 214,635.30 and 73,048.60

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Solution

The fourth proportional to 143,205.40, 214,635.30 and 73,048.60 is: 109,484.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,205.40 : 214,635.30 = 73,048.60 : x
  2. Step 2: Convert to fraction form
    143,205.40/214,635.30 = 73,048.60/x
  3. Step 3: Cross multiply
    143,205.40x = 214,635.30 × 73,048.60
  4. Step 4: Simplify right side
    143,205.40x = 15,678,808,175.58
  5. Step 5: Solve for x
    x = 15,678,808,175.58/143,205.40
  6. Step 6: Final answer
    x = 109,484.76

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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.