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Finding the Fourth Proportional to 143,493.94, 215,246.34 and 73,291.24

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Solution

The fourth proportional to 143,493.94, 215,246.34 and 73,291.24 is: 109,939.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,493.94 : 215,246.34 = 73,291.24 : x
  2. Step 2: Convert to fraction form
    143,493.94/215,246.34 = 73,291.24/x
  3. Step 3: Cross multiply
    143,493.94x = 215,246.34 × 73,291.24
  4. Step 4: Simplify right side
    143,493.94x = 15,775,671,164.06
  5. Step 5: Solve for x
    x = 15,775,671,164.06/143,493.94
  6. Step 6: Final answer
    x = 109,939.63

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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.