Home / 102,542.81-141,517.13-56,611.58

Finding the Fourth Proportional to 102,542.81, 141,517.13 and 56,611.58

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Solution

The fourth proportional to 102,542.81, 141,517.13 and 56,611.58 is: 78,128.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,542.81 : 141,517.13 = 56,611.58 : x
  2. Step 2: Convert to fraction form
    102,542.81/141,517.13 = 56,611.58/x
  3. Step 3: Cross multiply
    102,542.81x = 141,517.13 × 56,611.58
  4. Step 4: Simplify right side
    102,542.81x = 8,011,508,556.34
  5. Step 5: Solve for x
    x = 8,011,508,556.34/102,542.81
  6. Step 6: Final answer
    x = 78,128.43

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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.