Home / 102,458.75-141,393.68-57,139.59

Finding the Fourth Proportional to 102,458.75, 141,393.68 and 57,139.59

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Solution

The fourth proportional to 102,458.75, 141,393.68 and 57,139.59 is: 78,852.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,458.75 : 141,393.68 = 57,139.59 : x
  2. Step 2: Convert to fraction form
    102,458.75/141,393.68 = 57,139.59/x
  3. Step 3: Cross multiply
    102,458.75x = 141,393.68 × 57,139.59
  4. Step 4: Simplify right side
    102,458.75x = 8,079,176,618.09
  5. Step 5: Solve for x
    x = 8,079,176,618.09/102,458.75
  6. Step 6: Final answer
    x = 78,852.97

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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.