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Finding the Fourth Proportional to 119,920.20, 179,820.05 and 39,929.89

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Solution

The fourth proportional to 119,920.20, 179,820.05 and 39,929.89 is: 59,874.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,920.20 : 179,820.05 = 39,929.89 : x
  2. Step 2: Convert to fraction form
    119,920.20/179,820.05 = 39,929.89/x
  3. Step 3: Cross multiply
    119,920.20x = 179,820.05 × 39,929.89
  4. Step 4: Simplify right side
    119,920.20x = 7,180,194,223.12
  5. Step 5: Solve for x
    x = 7,180,194,223.12/119,920.20
  6. Step 6: Final answer
    x = 59,874.77

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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.