Home / 102,691.48-141,709.80-57,369.28

Finding the Fourth Proportional to 102,691.48, 141,709.80 and 57,369.28

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Solution

The fourth proportional to 102,691.48, 141,709.80 and 57,369.28 is: 79,167.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,691.48 : 141,709.80 = 57,369.28 : x
  2. Step 2: Convert to fraction form
    102,691.48/141,709.80 = 57,369.28/x
  3. Step 3: Cross multiply
    102,691.48x = 141,709.80 × 57,369.28
  4. Step 4: Simplify right side
    102,691.48x = 8,129,789,194.94
  5. Step 5: Solve for x
    x = 8,129,789,194.94/102,691.48
  6. Step 6: Final answer
    x = 79,167.12

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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.