Home / 139,689.28-192,777.51-82,331.02

Finding the Fourth Proportional to 139,689.28, 192,777.51 and 82,331.02

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Solution

The fourth proportional to 139,689.28, 192,777.51 and 82,331.02 is: 113,620.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,689.28 : 192,777.51 = 82,331.02 : x
  2. Step 2: Convert to fraction form
    139,689.28/192,777.51 = 82,331.02/x
  3. Step 3: Cross multiply
    139,689.28x = 192,777.51 × 82,331.02
  4. Step 4: Simplify right side
    139,689.28x = 15,871,569,031.36
  5. Step 5: Solve for x
    x = 15,871,569,031.36/139,689.28
  6. Step 6: Final answer
    x = 113,620.52

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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.