Home / 157,617.12-217,512.35-85,998.66

Finding the Fourth Proportional to 157,617.12, 217,512.35 and 85,998.66

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Solution

The fourth proportional to 157,617.12, 217,512.35 and 85,998.66 is: 118,678.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,617.12 : 217,512.35 = 85,998.66 : x
  2. Step 2: Convert to fraction form
    157,617.12/217,512.35 = 85,998.66/x
  3. Step 3: Cross multiply
    157,617.12x = 217,512.35 × 85,998.66
  4. Step 4: Simplify right side
    157,617.12x = 18,705,770,633.45
  5. Step 5: Solve for x
    x = 18,705,770,633.45/157,617.12
  6. Step 6: Final answer
    x = 118,678.55

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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.