Home / 102,138.48-140,989.20-59,710.64

Finding the Fourth Proportional to 102,138.48, 140,989.20 and 59,710.64

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Solution

The fourth proportional to 102,138.48, 140,989.20 and 59,710.64 is: 82,422.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,138.48 : 140,989.20 = 59,710.64 : x
  2. Step 2: Convert to fraction form
    102,138.48/140,989.20 = 59,710.64/x
  3. Step 3: Cross multiply
    102,138.48x = 140,989.20 × 59,710.64
  4. Step 4: Simplify right side
    102,138.48x = 8,418,555,365.09
  5. Step 5: Solve for x
    x = 8,418,555,365.09/102,138.48
  6. Step 6: Final answer
    x = 82,422.96

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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.