Home / 129,162.25-178,181.80-83,854.44

Finding the Fourth Proportional to 129,162.25, 178,181.80 and 83,854.44

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Solution

The fourth proportional to 129,162.25, 178,181.80 and 83,854.44 is: 115,678.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,162.25 : 178,181.80 = 83,854.44 : x
  2. Step 2: Convert to fraction form
    129,162.25/178,181.80 = 83,854.44/x
  3. Step 3: Cross multiply
    129,162.25x = 178,181.80 × 83,854.44
  4. Step 4: Simplify right side
    129,162.25x = 14,941,335,057.19
  5. Step 5: Solve for x
    x = 14,941,335,057.19/129,162.25
  6. Step 6: Final answer
    x = 115,678.81

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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.