Home / 82,084.26-122,532.83-72,119.74

Finding the Fourth Proportional to 82,084.26, 122,532.83 and 72,119.74

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Solution

The fourth proportional to 82,084.26, 122,532.83 and 72,119.74 is: 107,658.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,084.26 : 122,532.83 = 72,119.74 : x
  2. Step 2: Convert to fraction form
    82,084.26/122,532.83 = 72,119.74/x
  3. Step 3: Cross multiply
    82,084.26x = 122,532.83 × 72,119.74
  4. Step 4: Simplify right side
    82,084.26x = 8,837,035,816.12
  5. Step 5: Solve for x
    x = 8,837,035,816.12/82,084.26
  6. Step 6: Final answer
    x = 107,658.10

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.