Home / 102,489.09-141,435.72-57,170.04

Finding the Fourth Proportional to 102,489.09, 141,435.72 and 57,170.04

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Solution

The fourth proportional to 102,489.09, 141,435.72 and 57,170.04 is: 78,895.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,489.09 : 141,435.72 = 57,170.04 : x
  2. Step 2: Convert to fraction form
    102,489.09/141,435.72 = 57,170.04/x
  3. Step 3: Cross multiply
    102,489.09x = 141,435.72 × 57,170.04
  4. Step 4: Simplify right side
    102,489.09x = 8,085,885,769.83
  5. Step 5: Solve for x
    x = 8,085,885,769.83/102,489.09
  6. Step 6: Final answer
    x = 78,895.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.