Home / 86,920.28-130,146.83-55,158.38

Finding the Fourth Proportional to 86,920.28, 130,146.83 and 55,158.38

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Solution

The fourth proportional to 86,920.28, 130,146.83 and 55,158.38 is: 82,589.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,920.28 : 130,146.83 = 55,158.38 : x
  2. Step 2: Convert to fraction form
    86,920.28/130,146.83 = 55,158.38/x
  3. Step 3: Cross multiply
    86,920.28x = 130,146.83 × 55,158.38
  4. Step 4: Simplify right side
    86,920.28x = 7,178,687,378.41
  5. Step 5: Solve for x
    x = 7,178,687,378.41/86,920.28
  6. Step 6: Final answer
    x = 82,589.33

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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.