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Finding the Fourth Proportional to 129,806.72, 179,122.56 and 73,232

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Solution

The fourth proportional to 129,806.72, 179,122.56 and 73,232 is: 101,054.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,806.72 : 179,122.56 = 73,232 : x
  2. Step 2: Convert to fraction form
    129,806.72/179,122.56 = 73,232/x
  3. Step 3: Cross multiply
    129,806.72x = 179,122.56 × 73,232
  4. Step 4: Simplify right side
    129,806.72x = 13,117,503,313.92
  5. Step 5: Solve for x
    x = 13,117,503,313.92/129,806.72
  6. Step 6: Final answer
    x = 101,054.12

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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.