Home / 156,738.20-216,364.92-105,819.90

Finding the Fourth Proportional to 156,738.20, 216,364.92 and 105,819.90

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Solution

The fourth proportional to 156,738.20, 216,364.92 and 105,819.90 is: 146,076.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,738.20 : 216,364.92 = 105,819.90 : x
  2. Step 2: Convert to fraction form
    156,738.20/216,364.92 = 105,819.90/x
  3. Step 3: Cross multiply
    156,738.20x = 216,364.92 × 105,819.90
  4. Step 4: Simplify right side
    156,738.20x = 22,895,714,197.91
  5. Step 5: Solve for x
    x = 22,895,714,197.91/156,738.20
  6. Step 6: Final answer
    x = 146,076.16

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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.