Home / 129,722.20-178,996.04-73,122.64

Finding the Fourth Proportional to 129,722.20, 178,996.04 and 73,122.64

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Solution

The fourth proportional to 129,722.20, 178,996.04 and 73,122.64 is: 100,897.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,722.20 : 178,996.04 = 73,122.64 : x
  2. Step 2: Convert to fraction form
    129,722.20/178,996.04 = 73,122.64/x
  3. Step 3: Cross multiply
    129,722.20x = 178,996.04 × 73,122.64
  4. Step 4: Simplify right side
    129,722.20x = 13,088,662,994.35
  5. Step 5: Solve for x
    x = 13,088,662,994.35/129,722.20
  6. Step 6: Final answer
    x = 100,897.63

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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.