Home / 104,878.20-156,971.70-81,377.40

Finding the Fourth Proportional to 104,878.20, 156,971.70 and 81,377.40

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Solution

The fourth proportional to 104,878.20, 156,971.70 and 81,377.40 is: 121,797.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,878.20 : 156,971.70 = 81,377.40 : x
  2. Step 2: Convert to fraction form
    104,878.20/156,971.70 = 81,377.40/x
  3. Step 3: Cross multiply
    104,878.20x = 156,971.70 × 81,377.40
  4. Step 4: Simplify right side
    104,878.20x = 12,773,948,819.58
  5. Step 5: Solve for x
    x = 12,773,948,819.58/104,878.20
  6. Step 6: Final answer
    x = 121,797.94

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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.