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Finding the Fourth Proportional to 120,814.53, 166,714.29 and 69,830.56

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Solution

The fourth proportional to 120,814.53, 166,714.29 and 69,830.56 is: 96,360.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,814.53 : 166,714.29 = 69,830.56 : x
  2. Step 2: Convert to fraction form
    120,814.53/166,714.29 = 69,830.56/x
  3. Step 3: Cross multiply
    120,814.53x = 166,714.29 × 69,830.56
  4. Step 4: Simplify right side
    120,814.53x = 11,641,752,230.70
  5. Step 5: Solve for x
    x = 11,641,752,230.70/120,814.53
  6. Step 6: Final answer
    x = 96,360.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.