Home / 99,555.61-149,355.27-73,180.39

Finding the Fourth Proportional to 99,555.61, 149,355.27 and 73,180.39

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Solution

The fourth proportional to 99,555.61, 149,355.27 and 73,180.39 is: 109,786.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,555.61 : 149,355.27 = 73,180.39 : x
  2. Step 2: Convert to fraction form
    99,555.61/149,355.27 = 73,180.39/x
  3. Step 3: Cross multiply
    99,555.61x = 149,355.27 × 73,180.39
  4. Step 4: Simplify right side
    99,555.61x = 10,929,876,907.16
  5. Step 5: Solve for x
    x = 10,929,876,907.16/99,555.61
  6. Step 6: Final answer
    x = 109,786.65

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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.