Home / 190,976.40-286,378.20-85,741.20

Finding the Fourth Proportional to 190,976.40, 286,378.20 and 85,741.20

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Solution

The fourth proportional to 190,976.40, 286,378.20 and 85,741.20 is: 128,573.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,976.40 : 286,378.20 = 85,741.20 : x
  2. Step 2: Convert to fraction form
    190,976.40/286,378.20 = 85,741.20/x
  3. Step 3: Cross multiply
    190,976.40x = 286,378.20 × 85,741.20
  4. Step 4: Simplify right side
    190,976.40x = 24,554,410,521.84
  5. Step 5: Solve for x
    x = 24,554,410,521.84/190,976.40
  6. Step 6: Final answer
    x = 128,573.01

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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.