Home / 113,633.23-156,721.84-99,991.82

Finding the Fourth Proportional to 113,633.23, 156,721.84 and 99,991.82

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Solution

The fourth proportional to 113,633.23, 156,721.84 and 99,991.82 is: 137,907.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,633.23 : 156,721.84 = 99,991.82 : x
  2. Step 2: Convert to fraction form
    113,633.23/156,721.84 = 99,991.82/x
  3. Step 3: Cross multiply
    113,633.23x = 156,721.84 × 99,991.82
  4. Step 4: Simplify right side
    113,633.23x = 15,670,902,015.35
  5. Step 5: Solve for x
    x = 15,670,902,015.35/113,633.23
  6. Step 6: Final answer
    x = 137,907.74

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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.