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Finding the Fourth Proportional to 129,804.72, 179,119.80 and 73,230

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Solution

The fourth proportional to 129,804.72, 179,119.80 and 73,230 is: 101,051.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,804.72 : 179,119.80 = 73,230 : x
  2. Step 2: Convert to fraction form
    129,804.72/179,119.80 = 73,230/x
  3. Step 3: Cross multiply
    129,804.72x = 179,119.80 × 73,230
  4. Step 4: Simplify right side
    129,804.72x = 13,116,942,954
  5. Step 5: Solve for x
    x = 13,116,942,954/129,804.72
  6. Step 6: Final answer
    x = 101,051.36

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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.