Home / 120,813.40-181,220.10-109,732.60

Finding the Fourth Proportional to 120,813.40, 181,220.10 and 109,732.60

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Solution

The fourth proportional to 120,813.40, 181,220.10 and 109,732.60 is: 164,598.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,813.40 : 181,220.10 = 109,732.60 : x
  2. Step 2: Convert to fraction form
    120,813.40/181,220.10 = 109,732.60/x
  3. Step 3: Cross multiply
    120,813.40x = 181,220.10 × 109,732.60
  4. Step 4: Simplify right side
    120,813.40x = 19,885,752,745.26
  5. Step 5: Solve for x
    x = 19,885,752,745.26/120,813.40
  6. Step 6: Final answer
    x = 164,598.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.