Home / 157,385.80-217,194.78-85,765.60

Finding the Fourth Proportional to 157,385.80, 217,194.78 and 85,765.60

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Solution

The fourth proportional to 157,385.80, 217,194.78 and 85,765.60 is: 118,357.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,385.80 : 217,194.78 = 85,765.60 : x
  2. Step 2: Convert to fraction form
    157,385.80/217,194.78 = 85,765.60/x
  3. Step 3: Cross multiply
    157,385.80x = 217,194.78 × 85,765.60
  4. Step 4: Simplify right side
    157,385.80x = 18,627,840,623.57
  5. Step 5: Solve for x
    x = 18,627,840,623.57/157,385.80
  6. Step 6: Final answer
    x = 118,357.82

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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.