Home / 138,772.27-191,510.36-85,046.90

Finding the Fourth Proportional to 138,772.27, 191,510.36 and 85,046.90

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Solution

The fourth proportional to 138,772.27, 191,510.36 and 85,046.90 is: 117,367.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,772.27 : 191,510.36 = 85,046.90 : x
  2. Step 2: Convert to fraction form
    138,772.27/191,510.36 = 85,046.90/x
  3. Step 3: Cross multiply
    138,772.27x = 191,510.36 × 85,046.90
  4. Step 4: Simplify right side
    138,772.27x = 16,287,362,435.88
  5. Step 5: Solve for x
    x = 16,287,362,435.88/138,772.27
  6. Step 6: Final answer
    x = 117,367.56

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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.