Home / 90,815.20-136,234.70-30,005.27

Finding the Fourth Proportional to 90,815.20, 136,234.70 and 30,005.27

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Solution

The fourth proportional to 90,815.20, 136,234.70 and 30,005.27 is: 45,011.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,815.20 : 136,234.70 = 30,005.27 : x
  2. Step 2: Convert to fraction form
    90,815.20/136,234.70 = 30,005.27/x
  3. Step 3: Cross multiply
    90,815.20x = 136,234.70 × 30,005.27
  4. Step 4: Simplify right side
    90,815.20x = 4,087,758,350.71
  5. Step 5: Solve for x
    x = 4,087,758,350.71/90,815.20
  6. Step 6: Final answer
    x = 45,011.83

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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.