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Finding the Fourth Proportional to 132,172.89, 182,481.15 and 90,851.01

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Solution

The fourth proportional to 132,172.89, 182,481.15 and 90,851.01 is: 125,431.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,172.89 : 182,481.15 = 90,851.01 : x
  2. Step 2: Convert to fraction form
    132,172.89/182,481.15 = 90,851.01/x
  3. Step 3: Cross multiply
    132,172.89x = 182,481.15 × 90,851.01
  4. Step 4: Simplify right side
    132,172.89x = 16,578,596,783.46
  5. Step 5: Solve for x
    x = 16,578,596,783.46/132,172.89
  6. Step 6: Final answer
    x = 125,431.14

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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.