Home / 102,743.57-141,783.30-57,421.73

Finding the Fourth Proportional to 102,743.57, 141,783.30 and 57,421.73

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Solution

The fourth proportional to 102,743.57, 141,783.30 and 57,421.73 is: 79,240.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,743.57 : 141,783.30 = 57,421.73 : x
  2. Step 2: Convert to fraction form
    102,743.57/141,783.30 = 57,421.73/x
  3. Step 3: Cross multiply
    102,743.57x = 141,783.30 × 57,421.73
  4. Step 4: Simplify right side
    102,743.57x = 8,141,442,371.11
  5. Step 5: Solve for x
    x = 8,141,442,371.11/102,743.57
  6. Step 6: Final answer
    x = 79,240.41

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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.