Home / 115,944.40-173,686.20-66,638.80

Finding the Fourth Proportional to 115,944.40, 173,686.20 and 66,638.80

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Solution

The fourth proportional to 115,944.40, 173,686.20 and 66,638.80 is: 99,825.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,944.40 : 173,686.20 = 66,638.80 : x
  2. Step 2: Convert to fraction form
    115,944.40/173,686.20 = 66,638.80/x
  3. Step 3: Cross multiply
    115,944.40x = 173,686.20 × 66,638.80
  4. Step 4: Simplify right side
    115,944.40x = 11,574,239,944.56
  5. Step 5: Solve for x
    x = 11,574,239,944.56/115,944.40
  6. Step 6: Final answer
    x = 99,825.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.