Home / 112,936.55-155,839.75-65,205.68

Finding the Fourth Proportional to 112,936.55, 155,839.75 and 65,205.68

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Solution

The fourth proportional to 112,936.55, 155,839.75 and 65,205.68 is: 89,976.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,936.55 : 155,839.75 = 65,205.68 : x
  2. Step 2: Convert to fraction form
    112,936.55/155,839.75 = 65,205.68/x
  3. Step 3: Cross multiply
    112,936.55x = 155,839.75 × 65,205.68
  4. Step 4: Simplify right side
    112,936.55x = 10,161,635,927.57
  5. Step 5: Solve for x
    x = 10,161,635,927.57/112,936.55
  6. Step 6: Final answer
    x = 89,976.51

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1.5x scale

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.