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Finding the Fourth Proportional to 99,790.16, 149,709.17 and 33,230.90

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Solution

The fourth proportional to 99,790.16, 149,709.17 and 33,230.90 is: 49,854.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,790.16 : 149,709.17 = 33,230.90 : x
  2. Step 2: Convert to fraction form
    99,790.16/149,709.17 = 33,230.90/x
  3. Step 3: Cross multiply
    99,790.16x = 149,709.17 × 33,230.90
  4. Step 4: Simplify right side
    99,790.16x = 4,974,970,457.35
  5. Step 5: Solve for x
    x = 4,974,970,457.35/99,790.16
  6. Step 6: Final answer
    x = 49,854.32

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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.