Home / 172,564.42-238,121.91-100,930.45

Finding the Fourth Proportional to 172,564.42, 238,121.91 and 100,930.45

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Solution

The fourth proportional to 172,564.42, 238,121.91 and 100,930.45 is: 139,274.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,564.42 : 238,121.91 = 100,930.45 : x
  2. Step 2: Convert to fraction form
    172,564.42/238,121.91 = 100,930.45/x
  3. Step 3: Cross multiply
    172,564.42x = 238,121.91 × 100,930.45
  4. Step 4: Simplify right side
    172,564.42x = 24,033,751,531.16
  5. Step 5: Solve for x
    x = 24,033,751,531.16/172,564.42
  6. Step 6: Final answer
    x = 139,274.08

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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.