Home / 129,536.62-178,760.94-75,099.40

Finding the Fourth Proportional to 129,536.62, 178,760.94 and 75,099.40

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Solution

The fourth proportional to 129,536.62, 178,760.94 and 75,099.40 is: 103,637.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,536.62 : 178,760.94 = 75,099.40 : x
  2. Step 2: Convert to fraction form
    129,536.62/178,760.94 = 75,099.40/x
  3. Step 3: Cross multiply
    129,536.62x = 178,760.94 × 75,099.40
  4. Step 4: Simplify right side
    129,536.62x = 13,424,839,337.44
  5. Step 5: Solve for x
    x = 13,424,839,337.44/129,536.62
  6. Step 6: Final answer
    x = 103,637.41

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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.