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Finding the Fourth Proportional to 161,443.89, 242,163.40 and 72,634.68

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Solution

The fourth proportional to 161,443.89, 242,163.40 and 72,634.68 is: 108,950.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,443.89 : 242,163.40 = 72,634.68 : x
  2. Step 2: Convert to fraction form
    161,443.89/242,163.40 = 72,634.68/x
  3. Step 3: Cross multiply
    161,443.89x = 242,163.40 × 72,634.68
  4. Step 4: Simplify right side
    161,443.89x = 17,589,461,066.71
  5. Step 5: Solve for x
    x = 17,589,461,066.71/161,443.89
  6. Step 6: Final answer
    x = 108,950.92

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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.