Home / 102,002.60-140,760.78-56,679.41

Finding the Fourth Proportional to 102,002.60, 140,760.78 and 56,679.41

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Solution

The fourth proportional to 102,002.60, 140,760.78 and 56,679.41 is: 78,216.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,002.60 : 140,760.78 = 56,679.41 : x
  2. Step 2: Convert to fraction form
    102,002.60/140,760.78 = 56,679.41/x
  3. Step 3: Cross multiply
    102,002.60x = 140,760.78 × 56,679.41
  4. Step 4: Simplify right side
    102,002.60x = 7,978,237,961.54
  5. Step 5: Solve for x
    x = 7,978,237,961.54/102,002.60
  6. Step 6: Final answer
    x = 78,216.03

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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.