Home / 148,379.31-222,630.66-81,814.05

Finding the Fourth Proportional to 148,379.31, 222,630.66 and 81,814.05

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Solution

The fourth proportional to 148,379.31, 222,630.66 and 81,814.05 is: 122,755.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,379.31 : 222,630.66 = 81,814.05 : x
  2. Step 2: Convert to fraction form
    148,379.31/222,630.66 = 81,814.05/x
  3. Step 3: Cross multiply
    148,379.31x = 222,630.66 × 81,814.05
  4. Step 4: Simplify right side
    148,379.31x = 18,214,315,948.77
  5. Step 5: Solve for x
    x = 18,214,315,948.77/148,379.31
  6. Step 6: Final answer
    x = 122,755.09

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1.5x scale

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.