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Finding the Fourth Proportional to 82,370.32, 122,495.81 and 79,745.92

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Solution

The fourth proportional to 82,370.32, 122,495.81 and 79,745.92 is: 118,592.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,370.32 : 122,495.81 = 79,745.92 : x
  2. Step 2: Convert to fraction form
    82,370.32/122,495.81 = 79,745.92/x
  3. Step 3: Cross multiply
    82,370.32x = 122,495.81 × 79,745.92
  4. Step 4: Simplify right side
    82,370.32x = 9,768,541,064.60
  5. Step 5: Solve for x
    x = 9,768,541,064.60/82,370.32
  6. Step 6: Final answer
    x = 118,592.97

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1.5x scale

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.