Home / 120,147.81-181,032.75-99,546.27

Finding the Fourth Proportional to 120,147.81, 181,032.75 and 99,546.27

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Solution

The fourth proportional to 120,147.81, 181,032.75 and 99,546.27 is: 149,991.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,147.81 : 181,032.75 = 99,546.27 : x
  2. Step 2: Convert to fraction form
    120,147.81/181,032.75 = 99,546.27/x
  3. Step 3: Cross multiply
    120,147.81x = 181,032.75 × 99,546.27
  4. Step 4: Simplify right side
    120,147.81x = 18,021,135,010.34
  5. Step 5: Solve for x
    x = 18,021,135,010.34/120,147.81
  6. Step 6: Final answer
    x = 149,991.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.