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Finding the Fourth Proportional to 143,309.68, 214,964.25 and 38,128.66

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Solution

The fourth proportional to 143,309.68, 214,964.25 and 38,128.66 is: 57,192.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,309.68 : 214,964.25 = 38,128.66 : x
  2. Step 2: Convert to fraction form
    143,309.68/214,964.25 = 38,128.66/x
  3. Step 3: Cross multiply
    143,309.68x = 214,964.25 × 38,128.66
  4. Step 4: Simplify right side
    143,309.68x = 8,196,298,800.41
  5. Step 5: Solve for x
    x = 8,196,298,800.41/143,309.68
  6. Step 6: Final answer
    x = 57,192.92

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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.