Home / 138,522.12-191,161.26-81,195.24

Finding the Fourth Proportional to 138,522.12, 191,161.26 and 81,195.24

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Solution

The fourth proportional to 138,522.12, 191,161.26 and 81,195.24 is: 112,049.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,522.12 : 191,161.26 = 81,195.24 : x
  2. Step 2: Convert to fraction form
    138,522.12/191,161.26 = 81,195.24/x
  3. Step 3: Cross multiply
    138,522.12x = 191,161.26 × 81,195.24
  4. Step 4: Simplify right side
    138,522.12x = 15,521,384,384.40
  5. Step 5: Solve for x
    x = 15,521,384,384.40/138,522.12
  6. Step 6: Final answer
    x = 112,049.86

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1.5x scale

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.