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Finding the Fourth Proportional to 133,073.30, 183,643.26 and 72,644.48

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Solution

The fourth proportional to 133,073.30, 183,643.26 and 72,644.48 is: 100,250.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,073.30 : 183,643.26 = 72,644.48 : x
  2. Step 2: Convert to fraction form
    133,073.30/183,643.26 = 72,644.48/x
  3. Step 3: Cross multiply
    133,073.30x = 183,643.26 × 72,644.48
  4. Step 4: Simplify right side
    133,073.30x = 13,340,669,128.20
  5. Step 5: Solve for x
    x = 13,340,669,128.20/133,073.30
  6. Step 6: Final answer
    x = 100,250.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.