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Finding the Fourth Proportional to 172,988.73, 259,518.11 and 73,148.76

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Solution

The fourth proportional to 172,988.73, 259,518.11 and 73,148.76 is: 109,737.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,988.73 : 259,518.11 = 73,148.76 : x
  2. Step 2: Convert to fraction form
    172,988.73/259,518.11 = 73,148.76/x
  3. Step 3: Cross multiply
    172,988.73x = 259,518.11 × 73,148.76
  4. Step 4: Simplify right side
    172,988.73x = 18,983,427,944.04
  5. Step 5: Solve for x
    x = 18,983,427,944.04/172,988.73
  6. Step 6: Final answer
    x = 109,737.95

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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.