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Finding the Fourth Proportional to 171,696.92, 257,492.98 and 118,729.40

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Solution

The fourth proportional to 171,696.92, 257,492.98 and 118,729.40 is: 178,057.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,696.92 : 257,492.98 = 118,729.40 : x
  2. Step 2: Convert to fraction form
    171,696.92/257,492.98 = 118,729.40/x
  3. Step 3: Cross multiply
    171,696.92x = 257,492.98 × 118,729.40
  4. Step 4: Simplify right side
    171,696.92x = 30,571,987,019.61
  5. Step 5: Solve for x
    x = 30,571,987,019.61/171,696.92
  6. Step 6: Final answer
    x = 178,057.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.