Home / 138,328.20-207,492.30-131,111.10

Finding the Fourth Proportional to 138,328.20, 207,492.30 and 131,111.10

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Solution

The fourth proportional to 138,328.20, 207,492.30 and 131,111.10 is: 196,666.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,328.20 : 207,492.30 = 131,111.10 : x
  2. Step 2: Convert to fraction form
    138,328.20/207,492.30 = 131,111.10/x
  3. Step 3: Cross multiply
    138,328.20x = 207,492.30 × 131,111.10
  4. Step 4: Simplify right side
    138,328.20x = 27,204,543,694.53
  5. Step 5: Solve for x
    x = 27,204,543,694.53/138,328.20
  6. Step 6: Final answer
    x = 196,666.65

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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.