Home / 90,830.17-136,243.68-40,874.92

Finding the Fourth Proportional to 90,830.17, 136,243.68 and 40,874.92

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Solution

The fourth proportional to 90,830.17, 136,243.68 and 40,874.92 is: 61,311.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,830.17 : 136,243.68 = 40,874.92 : x
  2. Step 2: Convert to fraction form
    90,830.17/136,243.68 = 40,874.92/x
  3. Step 3: Cross multiply
    90,830.17x = 136,243.68 × 40,874.92
  4. Step 4: Simplify right side
    90,830.17x = 5,568,949,520.51
  5. Step 5: Solve for x
    x = 5,568,949,520.51/90,830.17
  6. Step 6: Final answer
    x = 61,311.67

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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.