Home / 100,131.05-138,136.86-59,824.64

Finding the Fourth Proportional to 100,131.05, 138,136.86 and 59,824.64

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Solution

The fourth proportional to 100,131.05, 138,136.86 and 59,824.64 is: 82,531.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,131.05 : 138,136.86 = 59,824.64 : x
  2. Step 2: Convert to fraction form
    100,131.05/138,136.86 = 59,824.64/x
  3. Step 3: Cross multiply
    100,131.05x = 138,136.86 × 59,824.64
  4. Step 4: Simplify right side
    100,131.05x = 8,263,988,265.57
  5. Step 5: Solve for x
    x = 8,263,988,265.57/100,131.05
  6. Step 6: Final answer
    x = 82,531.72

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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.