Home / 120,735.10-181,102.65-111,403.90

Finding the Fourth Proportional to 120,735.10, 181,102.65 and 111,403.90

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Solution

The fourth proportional to 120,735.10, 181,102.65 and 111,403.90 is: 167,105.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,735.10 : 181,102.65 = 111,403.90 : x
  2. Step 2: Convert to fraction form
    120,735.10/181,102.65 = 111,403.90/x
  3. Step 3: Cross multiply
    120,735.10x = 181,102.65 × 111,403.90
  4. Step 4: Simplify right side
    120,735.10x = 20,175,541,510.34
  5. Step 5: Solve for x
    x = 20,175,541,510.34/120,735.10
  6. Step 6: Final answer
    x = 167,105.85

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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.