Home / 116,517.21-160,775.07-65,529.78

Finding the Fourth Proportional to 116,517.21, 160,775.07 and 65,529.78

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Solution

The fourth proportional to 116,517.21, 160,775.07 and 65,529.78 is: 90,420.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,517.21 : 160,775.07 = 65,529.78 : x
  2. Step 2: Convert to fraction form
    116,517.21/160,775.07 = 65,529.78/x
  3. Step 3: Cross multiply
    116,517.21x = 160,775.07 × 65,529.78
  4. Step 4: Simplify right side
    116,517.21x = 10,535,554,117.94
  5. Step 5: Solve for x
    x = 10,535,554,117.94/116,517.21
  6. Step 6: Final answer
    x = 90,420.59

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1.5x scale

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.