Home / 102,820.40-154,000.20-53,514.80

Finding the Fourth Proportional to 102,820.40, 154,000.20 and 53,514.80

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Solution

The fourth proportional to 102,820.40, 154,000.20 and 53,514.80 is: 80,152.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,820.40 : 154,000.20 = 53,514.80 : x
  2. Step 2: Convert to fraction form
    102,820.40/154,000.20 = 53,514.80/x
  3. Step 3: Cross multiply
    102,820.40x = 154,000.20 × 53,514.80
  4. Step 4: Simplify right side
    102,820.40x = 8,241,289,902.96
  5. Step 5: Solve for x
    x = 8,241,289,902.96/102,820.40
  6. Step 6: Final answer
    x = 80,152.28

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1.5x scale

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.