Home / 129,433.20-178,629.87-75,714.81

Finding the Fourth Proportional to 129,433.20, 178,629.87 and 75,714.81

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Solution

The fourth proportional to 129,433.20, 178,629.87 and 75,714.81 is: 104,493.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,433.20 : 178,629.87 = 75,714.81 : x
  2. Step 2: Convert to fraction form
    129,433.20/178,629.87 = 75,714.81/x
  3. Step 3: Cross multiply
    129,433.20x = 178,629.87 × 75,714.81
  4. Step 4: Simplify right side
    129,433.20x = 13,524,926,667.37
  5. Step 5: Solve for x
    x = 13,524,926,667.37/129,433.20
  6. Step 6: Final answer
    x = 104,493.49

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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.