Home / 139,844.31-192,984.15-76,182.09

Finding the Fourth Proportional to 139,844.31, 192,984.15 and 76,182.09

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Solution

The fourth proportional to 139,844.31, 192,984.15 and 76,182.09 is: 105,130.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,844.31 : 192,984.15 = 76,182.09 : x
  2. Step 2: Convert to fraction form
    139,844.31/192,984.15 = 76,182.09/x
  3. Step 3: Cross multiply
    139,844.31x = 192,984.15 × 76,182.09
  4. Step 4: Simplify right side
    139,844.31x = 14,701,935,883.87
  5. Step 5: Solve for x
    x = 14,701,935,883.87/139,844.31
  6. Step 6: Final answer
    x = 105,130.74

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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.