Home / 100,555.09-149,944.43-99,654.37

Finding the Fourth Proportional to 100,555.09, 149,944.43 and 99,654.37

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Solution

The fourth proportional to 100,555.09, 149,944.43 and 99,654.37 is: 148,601.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,555.09 : 149,944.43 = 99,654.37 : x
  2. Step 2: Convert to fraction form
    100,555.09/149,944.43 = 99,654.37/x
  3. Step 3: Cross multiply
    100,555.09x = 149,944.43 × 99,654.37
  4. Step 4: Simplify right side
    100,555.09x = 14,942,617,706.66
  5. Step 5: Solve for x
    x = 14,942,617,706.66/100,555.09
  6. Step 6: Final answer
    x = 148,601.31

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.