Home / 138,299.63-207,498.65-68,228.15

Finding the Fourth Proportional to 138,299.63, 207,498.65 and 68,228.15

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Solution

The fourth proportional to 138,299.63, 207,498.65 and 68,228.15 is: 102,366.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,299.63 : 207,498.65 = 68,228.15 : x
  2. Step 2: Convert to fraction form
    138,299.63/207,498.65 = 68,228.15/x
  3. Step 3: Cross multiply
    138,299.63x = 207,498.65 × 68,228.15
  4. Step 4: Simplify right side
    138,299.63x = 14,157,247,638.36
  5. Step 5: Solve for x
    x = 14,157,247,638.36/138,299.63
  6. Step 6: Final answer
    x = 102,366.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.