Home / 161,431.98-242,145.36-72,622.68

Finding the Fourth Proportional to 161,431.98, 242,145.36 and 72,622.68

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Solution

The fourth proportional to 161,431.98, 242,145.36 and 72,622.68 is: 108,932.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,431.98 : 242,145.36 = 72,622.68 : x
  2. Step 2: Convert to fraction form
    161,431.98/242,145.36 = 72,622.68/x
  3. Step 3: Cross multiply
    161,431.98x = 242,145.36 × 72,622.68
  4. Step 4: Simplify right side
    161,431.98x = 17,585,244,992.76
  5. Step 5: Solve for x
    x = 17,585,244,992.76/161,431.98
  6. Step 6: Final answer
    x = 108,932.85

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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.