Home / 135,312.20-186,805.90-81,610.76

Finding the Fourth Proportional to 135,312.20, 186,805.90 and 81,610.76

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Solution

The fourth proportional to 135,312.20, 186,805.90 and 81,610.76 is: 112,668.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,312.20 : 186,805.90 = 81,610.76 : x
  2. Step 2: Convert to fraction form
    135,312.20/186,805.90 = 81,610.76/x
  3. Step 3: Cross multiply
    135,312.20x = 186,805.90 × 81,610.76
  4. Step 4: Simplify right side
    135,312.20x = 15,245,371,471.48
  5. Step 5: Solve for x
    x = 15,245,371,471.48/135,312.20
  6. Step 6: Final answer
    x = 112,668.12

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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.