Home / 129,996.64-179,398.64-79,723.36

Finding the Fourth Proportional to 129,996.64, 179,398.64 and 79,723.36

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Solution

The fourth proportional to 129,996.64, 179,398.64 and 79,723.36 is: 110,020.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,996.64 : 179,398.64 = 79,723.36 : x
  2. Step 2: Convert to fraction form
    129,996.64/179,398.64 = 79,723.36/x
  3. Step 3: Cross multiply
    129,996.64x = 179,398.64 × 79,723.36
  4. Step 4: Simplify right side
    129,996.64x = 14,302,262,360.23
  5. Step 5: Solve for x
    x = 14,302,262,360.23/129,996.64
  6. Step 6: Final answer
    x = 110,020.25

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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.