Home / 82,912.20-124,368.30-70,081.80

Finding the Fourth Proportional to 82,912.20, 124,368.30 and 70,081.80

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Solution

The fourth proportional to 82,912.20, 124,368.30 and 70,081.80 is: 105,122.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,912.20 : 124,368.30 = 70,081.80 : x
  2. Step 2: Convert to fraction form
    82,912.20/124,368.30 = 70,081.80/x
  3. Step 3: Cross multiply
    82,912.20x = 124,368.30 × 70,081.80
  4. Step 4: Simplify right side
    82,912.20x = 8,715,954,326.94
  5. Step 5: Solve for x
    x = 8,715,954,326.94/82,912.20
  6. Step 6: Final answer
    x = 105,122.70

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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.