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Finding the Fourth Proportional to 143,953.20, 216,037.80 and 73,796.40

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Solution

The fourth proportional to 143,953.20, 216,037.80 and 73,796.40 is: 110,749.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,953.20 : 216,037.80 = 73,796.40 : x
  2. Step 2: Convert to fraction form
    143,953.20/216,037.80 = 73,796.40/x
  3. Step 3: Cross multiply
    143,953.20x = 216,037.80 × 73,796.40
  4. Step 4: Simplify right side
    143,953.20x = 15,942,811,903.92
  5. Step 5: Solve for x
    x = 15,942,811,903.92/143,953.20
  6. Step 6: Final answer
    x = 110,749.97

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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.