Home / 129,440.14-194,124.60-81,984.04

Finding the Fourth Proportional to 129,440.14, 194,124.60 and 81,984.04

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Solution

The fourth proportional to 129,440.14, 194,124.60 and 81,984.04 is: 122,953.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,440.14 : 194,124.60 = 81,984.04 : x
  2. Step 2: Convert to fraction form
    129,440.14/194,124.60 = 81,984.04/x
  3. Step 3: Cross multiply
    129,440.14x = 194,124.60 × 81,984.04
  4. Step 4: Simplify right side
    129,440.14x = 15,915,118,971.38
  5. Step 5: Solve for x
    x = 15,915,118,971.38/129,440.14
  6. Step 6: Final answer
    x = 122,953.51

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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.