Home / 102,456.74-141,390.92-57,137.59

Finding the Fourth Proportional to 102,456.74, 141,390.92 and 57,137.59

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Solution

The fourth proportional to 102,456.74, 141,390.92 and 57,137.59 is: 78,850.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,456.74 : 141,390.92 = 57,137.59 : x
  2. Step 2: Convert to fraction form
    102,456.74/141,390.92 = 57,137.59/x
  3. Step 3: Cross multiply
    102,456.74x = 141,390.92 × 57,137.59
  4. Step 4: Simplify right side
    102,456.74x = 8,078,736,416.68
  5. Step 5: Solve for x
    x = 8,078,736,416.68/102,456.74
  6. Step 6: Final answer
    x = 78,850.22

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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.