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Finding the Fourth Proportional to 172,577.69, 238,222.22 and 100,980.78

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Solution

The fourth proportional to 172,577.69, 238,222.22 and 100,980.78 is: 139,391.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,577.69 : 238,222.22 = 100,980.78 : x
  2. Step 2: Convert to fraction form
    172,577.69/238,222.22 = 100,980.78/x
  3. Step 3: Cross multiply
    172,577.69x = 238,222.22 × 100,980.78
  4. Step 4: Simplify right side
    172,577.69x = 24,055,864,190.69
  5. Step 5: Solve for x
    x = 24,055,864,190.69/172,577.69
  6. Step 6: Final answer
    x = 139,391.51

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1.5x scale

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.