Home / 99,761.01-137,558.57-81,554.91

Finding the Fourth Proportional to 99,761.01, 137,558.57 and 81,554.91

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Solution

The fourth proportional to 99,761.01, 137,558.57 and 81,554.91 is: 112,454.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,761.01 : 137,558.57 = 81,554.91 : x
  2. Step 2: Convert to fraction form
    99,761.01/137,558.57 = 81,554.91/x
  3. Step 3: Cross multiply
    99,761.01x = 137,558.57 × 81,554.91
  4. Step 4: Simplify right side
    99,761.01x = 11,218,576,388.30
  5. Step 5: Solve for x
    x = 11,218,576,388.30/99,761.01
  6. Step 6: Final answer
    x = 112,454.52

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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.