Home / 281,648.30-422,500.05-81,970.70

Finding the Fourth Proportional to 281,648.30, 422,500.05 and 81,970.70

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Solution

The fourth proportional to 281,648.30, 422,500.05 and 81,970.70 is: 122,964.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,648.30 : 422,500.05 = 81,970.70 : x
  2. Step 2: Convert to fraction form
    281,648.30/422,500.05 = 81,970.70/x
  3. Step 3: Cross multiply
    281,648.30x = 422,500.05 × 81,970.70
  4. Step 4: Simplify right side
    281,648.30x = 34,632,624,848.54
  5. Step 5: Solve for x
    x = 34,632,624,848.54/281,648.30
  6. Step 6: Final answer
    x = 122,964.08

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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.