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Finding the Fourth Proportional to 85,133.31, 127,812.84 and 72,733.02

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Solution

The fourth proportional to 85,133.31, 127,812.84 and 72,733.02 is: 109,195.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,133.31 : 127,812.84 = 72,733.02 : x
  2. Step 2: Convert to fraction form
    85,133.31/127,812.84 = 72,733.02/x
  3. Step 3: Cross multiply
    85,133.31x = 127,812.84 × 72,733.02
  4. Step 4: Simplify right side
    85,133.31x = 9,296,213,847.98
  5. Step 5: Solve for x
    x = 9,296,213,847.98/85,133.31
  6. Step 6: Final answer
    x = 109,195.96

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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.