Home / 102,890.20-154,335.30-92,003.80

Finding the Fourth Proportional to 102,890.20, 154,335.30 and 92,003.80

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Solution

The fourth proportional to 102,890.20, 154,335.30 and 92,003.80 is: 138,005.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,890.20 : 154,335.30 = 92,003.80 : x
  2. Step 2: Convert to fraction form
    102,890.20/154,335.30 = 92,003.80/x
  3. Step 3: Cross multiply
    102,890.20x = 154,335.30 × 92,003.80
  4. Step 4: Simplify right side
    102,890.20x = 14,199,434,074.14
  5. Step 5: Solve for x
    x = 14,199,434,074.14/102,890.20
  6. Step 6: Final answer
    x = 138,005.70

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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.