Home / 136,383.88-188,232.18-85,415.92

Finding the Fourth Proportional to 136,383.88, 188,232.18 and 85,415.92

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Solution

The fourth proportional to 136,383.88, 188,232.18 and 85,415.92 is: 117,888.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,383.88 : 188,232.18 = 85,415.92 : x
  2. Step 2: Convert to fraction form
    136,383.88/188,232.18 = 85,415.92/x
  3. Step 3: Cross multiply
    136,383.88x = 188,232.18 × 85,415.92
  4. Step 4: Simplify right side
    136,383.88x = 16,078,024,828.31
  5. Step 5: Solve for x
    x = 16,078,024,828.31/136,383.88
  6. Step 6: Final answer
    x = 117,888.01

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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.