Home / 149,526.09-206,340.21-85,003.78

Finding the Fourth Proportional to 149,526.09, 206,340.21 and 85,003.78

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Solution

The fourth proportional to 149,526.09, 206,340.21 and 85,003.78 is: 117,301.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,526.09 : 206,340.21 = 85,003.78 : x
  2. Step 2: Convert to fraction form
    149,526.09/206,340.21 = 85,003.78/x
  3. Step 3: Cross multiply
    149,526.09x = 206,340.21 × 85,003.78
  4. Step 4: Simplify right side
    149,526.09x = 17,539,697,815.99
  5. Step 5: Solve for x
    x = 17,539,697,815.99/149,526.09
  6. Step 6: Final answer
    x = 117,301.92

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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.