Home / 149,222.09-205,937.17-83,816.21

Finding the Fourth Proportional to 149,222.09, 205,937.17 and 83,816.21

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Solution

The fourth proportional to 149,222.09, 205,937.17 and 83,816.21 is: 115,672.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,222.09 : 205,937.17 = 83,816.21 : x
  2. Step 2: Convert to fraction form
    149,222.09/205,937.17 = 83,816.21/x
  3. Step 3: Cross multiply
    149,222.09x = 205,937.17 × 83,816.21
  4. Step 4: Simplify right side
    149,222.09x = 17,260,873,392.83
  5. Step 5: Solve for x
    x = 17,260,873,392.83/149,222.09
  6. Step 6: Final answer
    x = 115,672.37

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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.