Home / 157,385.72-217,185.97-85,764.21

Finding the Fourth Proportional to 157,385.72, 217,185.97 and 85,764.21

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Solution

The fourth proportional to 157,385.72, 217,185.97 and 85,764.21 is: 118,351.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,385.72 : 217,185.97 = 85,764.21 : x
  2. Step 2: Convert to fraction form
    157,385.72/217,185.97 = 85,764.21/x
  3. Step 3: Cross multiply
    157,385.72x = 217,185.97 × 85,764.21
  4. Step 4: Simplify right side
    157,385.72x = 18,626,782,054.20
  5. Step 5: Solve for x
    x = 18,626,782,054.20/157,385.72
  6. Step 6: Final answer
    x = 118,351.16

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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.