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Finding the Fourth Proportional to 99,910.48, 149,874.36 and 40,750.24

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Solution

The fourth proportional to 99,910.48, 149,874.36 and 40,750.24 is: 61,128.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,910.48 : 149,874.36 = 40,750.24 : x
  2. Step 2: Convert to fraction form
    99,910.48/149,874.36 = 40,750.24/x
  3. Step 3: Cross multiply
    99,910.48x = 149,874.36 × 40,750.24
  4. Step 4: Simplify right side
    99,910.48x = 6,107,416,139.85
  5. Step 5: Solve for x
    x = 6,107,416,139.85/99,910.48
  6. Step 6: Final answer
    x = 61,128.88

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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.