Home / 120,714.30-180,999.45-74,000.70

Finding the Fourth Proportional to 120,714.30, 180,999.45 and 74,000.70

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Solution

The fourth proportional to 120,714.30, 180,999.45 and 74,000.70 is: 110,956.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,714.30 : 180,999.45 = 74,000.70 : x
  2. Step 2: Convert to fraction form
    120,714.30/180,999.45 = 74,000.70/x
  3. Step 3: Cross multiply
    120,714.30x = 180,999.45 × 74,000.70
  4. Step 4: Simplify right side
    120,714.30x = 13,394,085,999.62
  5. Step 5: Solve for x
    x = 13,394,085,999.62/120,714.30
  6. Step 6: Final answer
    x = 110,956.91

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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.