Home / 149,835.08-206,778.68-86,172.92

Finding the Fourth Proportional to 149,835.08, 206,778.68 and 86,172.92

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Solution

The fourth proportional to 149,835.08, 206,778.68 and 86,172.92 is: 118,922.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,835.08 : 206,778.68 = 86,172.92 : x
  2. Step 2: Convert to fraction form
    149,835.08/206,778.68 = 86,172.92/x
  3. Step 3: Cross multiply
    149,835.08x = 206,778.68 × 86,172.92
  4. Step 4: Simplify right side
    149,835.08x = 17,818,721,184.59
  5. Step 5: Solve for x
    x = 17,818,721,184.59/149,835.08
  6. Step 6: Final answer
    x = 118,922.23

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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.