Home / 122,939.40-169,614.36-74,556.12

Finding the Fourth Proportional to 122,939.40, 169,614.36 and 74,556.12

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Solution

The fourth proportional to 122,939.40, 169,614.36 and 74,556.12 is: 102,861.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,939.40 : 169,614.36 = 74,556.12 : x
  2. Step 2: Convert to fraction form
    122,939.40/169,614.36 = 74,556.12/x
  3. Step 3: Cross multiply
    122,939.40x = 169,614.36 × 74,556.12
  4. Step 4: Simplify right side
    122,939.40x = 12,645,788,577.88
  5. Step 5: Solve for x
    x = 12,645,788,577.88/122,939.40
  6. Step 6: Final answer
    x = 102,861.97

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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.