Home / 151,917.10-209,644.41-83,938.66

Finding the Fourth Proportional to 151,917.10, 209,644.41 and 83,938.66

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Solution

The fourth proportional to 151,917.10, 209,644.41 and 83,938.66 is: 115,834.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,917.10 : 209,644.41 = 83,938.66 : x
  2. Step 2: Convert to fraction form
    151,917.10/209,644.41 = 83,938.66/x
  3. Step 3: Cross multiply
    151,917.10x = 209,644.41 × 83,938.66
  4. Step 4: Simplify right side
    151,917.10x = 17,597,270,851.89
  5. Step 5: Solve for x
    x = 17,597,270,851.89/151,917.10
  6. Step 6: Final answer
    x = 115,834.69

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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.