Home / 209,551.79-289,237.10-129,046.82

Finding the Fourth Proportional to 209,551.79, 289,237.10 and 129,046.82

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Solution

The fourth proportional to 209,551.79, 289,237.10 and 129,046.82 is: 178,118.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,551.79 : 289,237.10 = 129,046.82 : x
  2. Step 2: Convert to fraction form
    209,551.79/289,237.10 = 129,046.82/x
  3. Step 3: Cross multiply
    209,551.79x = 289,237.10 × 129,046.82
  4. Step 4: Simplify right side
    209,551.79x = 37,325,125,889.60
  5. Step 5: Solve for x
    x = 37,325,125,889.60/209,551.79
  6. Step 6: Final answer
    x = 178,118.86

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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.