Home / 102,712.38-141,741.39-57,391.02

Finding the Fourth Proportional to 102,712.38, 141,741.39 and 57,391.02

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Solution

The fourth proportional to 102,712.38, 141,741.39 and 57,391.02 is: 79,198.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,712.38 : 141,741.39 = 57,391.02 : x
  2. Step 2: Convert to fraction form
    102,712.38/141,741.39 = 57,391.02/x
  3. Step 3: Cross multiply
    102,712.38x = 141,741.39 × 57,391.02
  4. Step 4: Simplify right side
    102,712.38x = 8,134,682,948.32
  5. Step 5: Solve for x
    x = 8,134,682,948.32/102,712.38
  6. Step 6: Final answer
    x = 79,198.66

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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.