Home / 138,554.03-191,206.68-81,179.62

Finding the Fourth Proportional to 138,554.03, 191,206.68 and 81,179.62

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Solution

The fourth proportional to 138,554.03, 191,206.68 and 81,179.62 is: 112,029.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,554.03 : 191,206.68 = 81,179.62 : x
  2. Step 2: Convert to fraction form
    138,554.03/191,206.68 = 81,179.62/x
  3. Step 3: Cross multiply
    138,554.03x = 191,206.68 × 81,179.62
  4. Step 4: Simplify right side
    138,554.03x = 15,522,085,526.37
  5. Step 5: Solve for x
    x = 15,522,085,526.37/138,554.03
  6. Step 6: Final answer
    x = 112,029.12

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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.