Home / 190,920.40-285,944.40-91,150.72

Finding the Fourth Proportional to 190,920.40, 285,944.40 and 91,150.72

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Solution

The fourth proportional to 190,920.40, 285,944.40 and 91,150.72 is: 136,517.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,920.40 : 285,944.40 = 91,150.72 : x
  2. Step 2: Convert to fraction form
    190,920.40/285,944.40 = 91,150.72/x
  3. Step 3: Cross multiply
    190,920.40x = 285,944.40 × 91,150.72
  4. Step 4: Simplify right side
    190,920.40x = 26,064,037,939.97
  5. Step 5: Solve for x
    x = 26,064,037,939.97/190,920.40
  6. Step 6: Final answer
    x = 136,517.83

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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.