Home / 99,347.21-137,093.60-56,908.47

Finding the Fourth Proportional to 99,347.21, 137,093.60 and 56,908.47

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Solution

The fourth proportional to 99,347.21, 137,093.60 and 56,908.47 is: 78,530.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,347.21 : 137,093.60 = 56,908.47 : x
  2. Step 2: Convert to fraction form
    99,347.21/137,093.60 = 56,908.47/x
  3. Step 3: Cross multiply
    99,347.21x = 137,093.60 × 56,908.47
  4. Step 4: Simplify right side
    99,347.21x = 7,801,787,165.06
  5. Step 5: Solve for x
    x = 7,801,787,165.06/99,347.21
  6. Step 6: Final answer
    x = 78,530.51

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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.