Home / 149,833.63-206,776.70-86,171.49

Finding the Fourth Proportional to 149,833.63, 206,776.70 and 86,171.49

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Solution

The fourth proportional to 149,833.63, 206,776.70 and 86,171.49 is: 118,920.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,833.63 : 206,776.70 = 86,171.49 : x
  2. Step 2: Convert to fraction form
    149,833.63/206,776.70 = 86,171.49/x
  3. Step 3: Cross multiply
    149,833.63x = 206,776.70 × 86,171.49
  4. Step 4: Simplify right side
    149,833.63x = 17,818,255,517.83
  5. Step 5: Solve for x
    x = 17,818,255,517.83/149,833.63
  6. Step 6: Final answer
    x = 118,920.27

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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.