Home / 138,601.20-191,266.08-82,030.80

Finding the Fourth Proportional to 138,601.20, 191,266.08 and 82,030.80

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Solution

The fourth proportional to 138,601.20, 191,266.08 and 82,030.80 is: 113,200.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,601.20 : 191,266.08 = 82,030.80 : x
  2. Step 2: Convert to fraction form
    138,601.20/191,266.08 = 82,030.80/x
  3. Step 3: Cross multiply
    138,601.20x = 191,266.08 × 82,030.80
  4. Step 4: Simplify right side
    138,601.20x = 15,689,709,555.26
  5. Step 5: Solve for x
    x = 15,689,709,555.26/138,601.20
  6. Step 6: Final answer
    x = 113,200.39

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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.