Home / 99,634.04-149,284.94-81,919.34

Finding the Fourth Proportional to 99,634.04, 149,284.94 and 81,919.34

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Solution

The fourth proportional to 99,634.04, 149,284.94 and 81,919.34 is: 122,742.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,634.04 : 149,284.94 = 81,919.34 : x
  2. Step 2: Convert to fraction form
    99,634.04/149,284.94 = 81,919.34/x
  3. Step 3: Cross multiply
    99,634.04x = 149,284.94 × 81,919.34
  4. Step 4: Simplify right side
    99,634.04x = 12,229,323,756.74
  5. Step 5: Solve for x
    x = 12,229,323,756.74/99,634.04
  6. Step 6: Final answer
    x = 122,742.43

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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.