Home / 102,461.75-141,397.82-57,142.59

Finding the Fourth Proportional to 102,461.75, 141,397.82 and 57,142.59

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Solution

The fourth proportional to 102,461.75, 141,397.82 and 57,142.59 is: 78,857.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,461.75 : 141,397.82 = 57,142.59 : x
  2. Step 2: Convert to fraction form
    102,461.75/141,397.82 = 57,142.59/x
  3. Step 3: Cross multiply
    102,461.75x = 141,397.82 × 57,142.59
  4. Step 4: Simplify right side
    102,461.75x = 8,079,837,369.44
  5. Step 5: Solve for x
    x = 8,079,837,369.44/102,461.75
  6. Step 6: Final answer
    x = 78,857.11

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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.