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Finding the Fourth Proportional to 129,795.48, 179,150.40 and 73,239.48

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Solution

The fourth proportional to 129,795.48, 179,150.40 and 73,239.48 is: 101,088.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,795.48 : 179,150.40 = 73,239.48 : x
  2. Step 2: Convert to fraction form
    129,795.48/179,150.40 = 73,239.48/x
  3. Step 3: Cross multiply
    129,795.48x = 179,150.40 × 73,239.48
  4. Step 4: Simplify right side
    129,795.48x = 13,120,882,137.79
  5. Step 5: Solve for x
    x = 13,120,882,137.79/129,795.48
  6. Step 6: Final answer
    x = 101,088.90

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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.