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Finding the Fourth Proportional to 173,154.30, 259,780.05 and 84,410.70

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Solution

The fourth proportional to 173,154.30, 259,780.05 and 84,410.70 is: 126,639.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,154.30 : 259,780.05 = 84,410.70 : x
  2. Step 2: Convert to fraction form
    173,154.30/259,780.05 = 84,410.70/x
  3. Step 3: Cross multiply
    173,154.30x = 259,780.05 × 84,410.70
  4. Step 4: Simplify right side
    173,154.30x = 21,928,215,866.54
  5. Step 5: Solve for x
    x = 21,928,215,866.54/173,154.30
  6. Step 6: Final answer
    x = 126,639.74

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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.