Home / 172,782.14-238,386.52-100,170.55

Finding the Fourth Proportional to 172,782.14, 238,386.52 and 100,170.55

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Solution

The fourth proportional to 172,782.14, 238,386.52 and 100,170.55 is: 138,204.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,782.14 : 238,386.52 = 100,170.55 : x
  2. Step 2: Convert to fraction form
    172,782.14/238,386.52 = 100,170.55/x
  3. Step 3: Cross multiply
    172,782.14x = 238,386.52 × 100,170.55
  4. Step 4: Simplify right side
    172,782.14x = 23,879,307,974.59
  5. Step 5: Solve for x
    x = 23,879,307,974.59/172,782.14
  6. Step 6: Final answer
    x = 138,204.72

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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.