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Finding the Fourth Proportional to 99,519.80, 149,279.70 and 97,879.55

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Solution

The fourth proportional to 99,519.80, 149,279.70 and 97,879.55 is: 146,819.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,519.80 : 149,279.70 = 97,879.55 : x
  2. Step 2: Convert to fraction form
    99,519.80/149,279.70 = 97,879.55/x
  3. Step 3: Cross multiply
    99,519.80x = 149,279.70 × 97,879.55
  4. Step 4: Simplify right side
    99,519.80x = 14,611,429,860.14
  5. Step 5: Solve for x
    x = 14,611,429,860.14/99,519.80
  6. Step 6: Final answer
    x = 146,819.33

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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.