Home / 99,917.71-149,983.25-43,019.80

Finding the Fourth Proportional to 99,917.71, 149,983.25 and 43,019.80

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Solution

The fourth proportional to 99,917.71, 149,983.25 and 43,019.80 is: 64,575.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,917.71 : 149,983.25 = 43,019.80 : x
  2. Step 2: Convert to fraction form
    99,917.71/149,983.25 = 43,019.80/x
  3. Step 3: Cross multiply
    99,917.71x = 149,983.25 × 43,019.80
  4. Step 4: Simplify right side
    99,917.71x = 6,452,248,828.29
  5. Step 5: Solve for x
    x = 6,452,248,828.29/99,917.71
  6. Step 6: Final answer
    x = 64,575.63

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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.