Home / 120,729,171.45-181,093,757.18-111,402,381.90

Finding the Fourth Proportional to 120,729,171.45, 181,093,757.18 and 111,402,381.90

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Solution

The fourth proportional to 120,729,171.45, 181,093,757.18 and 111,402,381.90 is: 167,103,572.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,729,171.45 : 181,093,757.18 = 111,402,381.90 : x
  2. Step 2: Convert to fraction form
    120,729,171.45/181,093,757.18 = 111,402,381.90/x
  3. Step 3: Cross multiply
    120,729,171.45x = 181,093,757.18 × 111,402,381.90
  4. Step 4: Simplify right side
    120,729,171.45x = 20,174,275,896,515,216
  5. Step 5: Solve for x
    x = 20,174,275,896,515,216/120,729,171.45
  6. Step 6: Final answer
    x = 167,103,572.85

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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.