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Finding the Fourth Proportional to 143,805.66, 215,709.06 and 43,965.42

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Solution

The fourth proportional to 143,805.66, 215,709.06 and 43,965.42 is: 65,948.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,805.66 : 215,709.06 = 43,965.42 : x
  2. Step 2: Convert to fraction form
    143,805.66/215,709.06 = 43,965.42/x
  3. Step 3: Cross multiply
    143,805.66x = 215,709.06 × 43,965.42
  4. Step 4: Simplify right side
    143,805.66x = 9,483,739,420.71
  5. Step 5: Solve for x
    x = 9,483,739,420.71/143,805.66
  6. Step 6: Final answer
    x = 65,948.30

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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.