Home / 82,938.70-124,408.05-68,164.30

Finding the Fourth Proportional to 82,938.70, 124,408.05 and 68,164.30

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Solution

The fourth proportional to 82,938.70, 124,408.05 and 68,164.30 is: 102,246.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,938.70 : 124,408.05 = 68,164.30 : x
  2. Step 2: Convert to fraction form
    82,938.70/124,408.05 = 68,164.30/x
  3. Step 3: Cross multiply
    82,938.70x = 124,408.05 × 68,164.30
  4. Step 4: Simplify right side
    82,938.70x = 8,480,187,642.62
  5. Step 5: Solve for x
    x = 8,480,187,642.62/82,938.70
  6. Step 6: Final answer
    x = 102,246.45

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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.