Home / 149,863-206,811.66-86,204.56

Finding the Fourth Proportional to 149,863, 206,811.66 and 86,204.56

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Solution

The fourth proportional to 149,863, 206,811.66 and 86,204.56 is: 118,962.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,863 : 206,811.66 = 86,204.56 : x
  2. Step 2: Convert to fraction form
    149,863/206,811.66 = 86,204.56/x
  3. Step 3: Cross multiply
    149,863x = 206,811.66 × 86,204.56
  4. Step 4: Simplify right side
    149,863x = 17,828,108,153.17
  5. Step 5: Solve for x
    x = 17,828,108,153.17/149,863
  6. Step 6: Final answer
    x = 118,962.71

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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.