Home / 120,977.49-166,967.09-87,098.11

Finding the Fourth Proportional to 120,977.49, 166,967.09 and 87,098.11

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Solution

The fourth proportional to 120,977.49, 166,967.09 and 87,098.11 is: 120,208.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,977.49 : 166,967.09 = 87,098.11 : x
  2. Step 2: Convert to fraction form
    120,977.49/166,967.09 = 87,098.11/x
  3. Step 3: Cross multiply
    120,977.49x = 166,967.09 × 87,098.11
  4. Step 4: Simplify right side
    120,977.49x = 14,542,517,971.20
  5. Step 5: Solve for x
    x = 14,542,517,971.20/120,977.49
  6. Step 6: Final answer
    x = 120,208.46

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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.