Home / 102,416.92-153,361.86-82,331.80

Finding the Fourth Proportional to 102,416.92, 153,361.86 and 82,331.80

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Solution

The fourth proportional to 102,416.92, 153,361.86 and 82,331.80 is: 123,285.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,416.92 : 153,361.86 = 82,331.80 : x
  2. Step 2: Convert to fraction form
    102,416.92/153,361.86 = 82,331.80/x
  3. Step 3: Cross multiply
    102,416.92x = 153,361.86 × 82,331.80
  4. Step 4: Simplify right side
    102,416.92x = 12,626,557,985.15
  5. Step 5: Solve for x
    x = 12,626,557,985.15/102,416.92
  6. Step 6: Final answer
    x = 123,285.86

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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.