Home / 168,018.36-252,034.58-78,145.39

Finding the Fourth Proportional to 168,018.36, 252,034.58 and 78,145.39

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Solution

The fourth proportional to 168,018.36, 252,034.58 and 78,145.39 is: 117,221.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,018.36 : 252,034.58 = 78,145.39 : x
  2. Step 2: Convert to fraction form
    168,018.36/252,034.58 = 78,145.39/x
  3. Step 3: Cross multiply
    168,018.36x = 252,034.58 × 78,145.39
  4. Step 4: Simplify right side
    168,018.36x = 19,695,340,547.59
  5. Step 5: Solve for x
    x = 19,695,340,547.59/168,018.36
  6. Step 6: Final answer
    x = 117,221.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.