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Finding the Fourth Proportional to 143,697.06, 215,545.56 and 43,857.76

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Solution

The fourth proportional to 143,697.06, 215,545.56 and 43,857.76 is: 65,786.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,697.06 : 215,545.56 = 43,857.76 : x
  2. Step 2: Convert to fraction form
    143,697.06/215,545.56 = 43,857.76/x
  3. Step 3: Cross multiply
    143,697.06x = 215,545.56 × 43,857.76
  4. Step 4: Simplify right side
    143,697.06x = 9,453,345,439.55
  5. Step 5: Solve for x
    x = 9,453,345,439.55/143,697.06
  6. Step 6: Final answer
    x = 65,786.63

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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.