Home / 138,224.20-207,336.30-68,240.20

Finding the Fourth Proportional to 138,224.20, 207,336.30 and 68,240.20

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Solution

The fourth proportional to 138,224.20, 207,336.30 and 68,240.20 is: 102,360.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,224.20 : 207,336.30 = 68,240.20 : x
  2. Step 2: Convert to fraction form
    138,224.20/207,336.30 = 68,240.20/x
  3. Step 3: Cross multiply
    138,224.20x = 207,336.30 × 68,240.20
  4. Step 4: Simplify right side
    138,224.20x = 14,148,670,579.26
  5. Step 5: Solve for x
    x = 14,148,670,579.26/138,224.20
  6. Step 6: Final answer
    x = 102,360.30

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1.5x scale

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.