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Finding the Fourth Proportional to 180,420.80, 248,974.56 and 99,851.72

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Solution

The fourth proportional to 180,420.80, 248,974.56 and 99,851.72 is: 137,791.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,420.80 : 248,974.56 = 99,851.72 : x
  2. Step 2: Convert to fraction form
    180,420.80/248,974.56 = 99,851.72/x
  3. Step 3: Cross multiply
    180,420.80x = 248,974.56 × 99,851.72
  4. Step 4: Simplify right side
    180,420.80x = 24,860,538,052.24
  5. Step 5: Solve for x
    x = 24,860,538,052.24/180,420.80
  6. Step 6: Final answer
    x = 137,791.97

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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.