Home / 157,388.66-217,190.53-85,767.45

Finding the Fourth Proportional to 157,388.66, 217,190.53 and 85,767.45

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Solution

The fourth proportional to 157,388.66, 217,190.53 and 85,767.45 is: 118,355.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,388.66 : 217,190.53 = 85,767.45 : x
  2. Step 2: Convert to fraction form
    157,388.66/217,190.53 = 85,767.45/x
  3. Step 3: Cross multiply
    157,388.66x = 217,190.53 × 85,767.45
  4. Step 4: Simplify right side
    157,388.66x = 18,627,877,922.25
  5. Step 5: Solve for x
    x = 18,627,877,922.25/157,388.66
  6. Step 6: Final answer
    x = 118,355.91

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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.