Home / 99,755.33-137,665.67-54,435.80

Finding the Fourth Proportional to 99,755.33, 137,665.67 and 54,435.80

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Solution

The fourth proportional to 99,755.33, 137,665.67 and 54,435.80 is: 75,123.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,755.33 : 137,665.67 = 54,435.80 : x
  2. Step 2: Convert to fraction form
    99,755.33/137,665.67 = 54,435.80/x
  3. Step 3: Cross multiply
    99,755.33x = 137,665.67 × 54,435.80
  4. Step 4: Simplify right side
    99,755.33x = 7,493,940,878.99
  5. Step 5: Solve for x
    x = 7,493,940,878.99/99,755.33
  6. Step 6: Final answer
    x = 75,123.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.