Home / 157,431.43-217,255.06-85,811.23

Finding the Fourth Proportional to 157,431.43, 217,255.06 and 85,811.23

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Solution

The fourth proportional to 157,431.43, 217,255.06 and 85,811.23 is: 118,419.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,431.43 : 217,255.06 = 85,811.23 : x
  2. Step 2: Convert to fraction form
    157,431.43/217,255.06 = 85,811.23/x
  3. Step 3: Cross multiply
    157,431.43x = 217,255.06 × 85,811.23
  4. Step 4: Simplify right side
    157,431.43x = 18,642,923,922.32
  5. Step 5: Solve for x
    x = 18,642,923,922.32/157,431.43
  6. Step 6: Final answer
    x = 118,419.33

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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.