Home / 157,261.20-217,021.86-85,641.54

Finding the Fourth Proportional to 157,261.20, 217,021.86 and 85,641.54

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Solution

The fourth proportional to 157,261.20, 217,021.86 and 85,641.54 is: 118,186.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,261.20 : 217,021.86 = 85,641.54 : x
  2. Step 2: Convert to fraction form
    157,261.20/217,021.86 = 85,641.54/x
  3. Step 3: Cross multiply
    157,261.20x = 217,021.86 × 85,641.54
  4. Step 4: Simplify right side
    157,261.20x = 18,586,086,304.06
  5. Step 5: Solve for x
    x = 18,586,086,304.06/157,261.20
  6. Step 6: Final answer
    x = 118,186.09

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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.