Home / 86,839.47-130,185.36-82,706.04

Finding the Fourth Proportional to 86,839.47, 130,185.36 and 82,706.04

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Solution

The fourth proportional to 86,839.47, 130,185.36 and 82,706.04 is: 123,988.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,839.47 : 130,185.36 = 82,706.04 : x
  2. Step 2: Convert to fraction form
    86,839.47/130,185.36 = 82,706.04/x
  3. Step 3: Cross multiply
    86,839.47x = 130,185.36 × 82,706.04
  4. Step 4: Simplify right side
    86,839.47x = 10,767,115,591.57
  5. Step 5: Solve for x
    x = 10,767,115,591.57/86,839.47
  6. Step 6: Final answer
    x = 123,988.73

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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.