Home / 157,834.36-217,803.09-86,213.35

Finding the Fourth Proportional to 157,834.36, 217,803.09 and 86,213.35

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Solution

The fourth proportional to 157,834.36, 217,803.09 and 86,213.35 is: 118,969.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,834.36 : 217,803.09 = 86,213.35 : x
  2. Step 2: Convert to fraction form
    157,834.36/217,803.09 = 86,213.35/x
  3. Step 3: Cross multiply
    157,834.36x = 217,803.09 × 86,213.35
  4. Step 4: Simplify right side
    157,834.36x = 18,777,534,029.25
  5. Step 5: Solve for x
    x = 18,777,534,029.25/157,834.36
  6. Step 6: Final answer
    x = 118,969.87

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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.