Home / 102,132.43-140,942.74-57,420.43

Finding the Fourth Proportional to 102,132.43, 140,942.74 and 57,420.43

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Solution

The fourth proportional to 102,132.43, 140,942.74 and 57,420.43 is: 79,240.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,132.43 : 140,942.74 = 57,420.43 : x
  2. Step 2: Convert to fraction form
    102,132.43/140,942.74 = 57,420.43/x
  3. Step 3: Cross multiply
    102,132.43x = 140,942.74 × 57,420.43
  4. Step 4: Simplify right side
    102,132.43x = 8,092,992,240.27
  5. Step 5: Solve for x
    x = 8,092,992,240.27/102,132.43
  6. Step 6: Final answer
    x = 79,240.18

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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.