Home / 157,390.56-217,191.24-85,770.36

Finding the Fourth Proportional to 157,390.56, 217,191.24 and 85,770.36

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Solution

The fourth proportional to 157,390.56, 217,191.24 and 85,770.36 is: 118,358.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,390.56 : 217,191.24 = 85,770.36 : x
  2. Step 2: Convert to fraction form
    157,390.56/217,191.24 = 85,770.36/x
  3. Step 3: Cross multiply
    157,390.56x = 217,191.24 × 85,770.36
  4. Step 4: Simplify right side
    157,390.56x = 18,628,570,843.65
  5. Step 5: Solve for x
    x = 18,628,570,843.65/157,390.56
  6. Step 6: Final answer
    x = 118,358.88

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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.