Home / 148,866.36-205,423.64-85,189.56

Finding the Fourth Proportional to 148,866.36, 205,423.64 and 85,189.56

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Solution

The fourth proportional to 148,866.36, 205,423.64 and 85,189.56 is: 117,554.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,866.36 : 205,423.64 = 85,189.56 : x
  2. Step 2: Convert to fraction form
    148,866.36/205,423.64 = 85,189.56/x
  3. Step 3: Cross multiply
    148,866.36x = 205,423.64 × 85,189.56
  4. Step 4: Simplify right side
    148,866.36x = 17,499,949,505.20
  5. Step 5: Solve for x
    x = 17,499,949,505.20/148,866.36
  6. Step 6: Final answer
    x = 117,554.76

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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.