Home / 102,302.43-141,128.46-79,485.27

Finding the Fourth Proportional to 102,302.43, 141,128.46 and 79,485.27

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Solution

The fourth proportional to 102,302.43, 141,128.46 and 79,485.27 is: 109,651.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,302.43 : 141,128.46 = 79,485.27 : x
  2. Step 2: Convert to fraction form
    102,302.43/141,128.46 = 79,485.27/x
  3. Step 3: Cross multiply
    102,302.43x = 141,128.46 × 79,485.27
  4. Step 4: Simplify right side
    102,302.43x = 11,217,633,813.94
  5. Step 5: Solve for x
    x = 11,217,633,813.94/102,302.43
  6. Step 6: Final answer
    x = 109,651.68

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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.