Home / 190,366.40-285,551.64-78,017.80

Finding the Fourth Proportional to 190,366.40, 285,551.64 and 78,017.80

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Solution

The fourth proportional to 190,366.40, 285,551.64 and 78,017.80 is: 117,027.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,366.40 : 285,551.64 = 78,017.80 : x
  2. Step 2: Convert to fraction form
    190,366.40/285,551.64 = 78,017.80/x
  3. Step 3: Cross multiply
    190,366.40x = 285,551.64 × 78,017.80
  4. Step 4: Simplify right side
    190,366.40x = 22,278,110,739.19
  5. Step 5: Solve for x
    x = 22,278,110,739.19/190,366.40
  6. Step 6: Final answer
    x = 117,027.54

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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.