Home / 147,819.20-221,680.20-54,312.80

Finding the Fourth Proportional to 147,819.20, 221,680.20 and 54,312.80

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Solution

The fourth proportional to 147,819.20, 221,680.20 and 54,312.80 is: 81,451.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,819.20 : 221,680.20 = 54,312.80 : x
  2. Step 2: Convert to fraction form
    147,819.20/221,680.20 = 54,312.80/x
  3. Step 3: Cross multiply
    147,819.20x = 221,680.20 × 54,312.80
  4. Step 4: Simplify right side
    147,819.20x = 12,040,072,366.56
  5. Step 5: Solve for x
    x = 12,040,072,366.56/147,819.20
  6. Step 6: Final answer
    x = 81,451.34

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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.