Home / 190,922.40-286,383.60-78,607.80

Finding the Fourth Proportional to 190,922.40, 286,383.60 and 78,607.80

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Solution

The fourth proportional to 190,922.40, 286,383.60 and 78,607.80 is: 117,911.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,922.40 : 286,383.60 = 78,607.80 : x
  2. Step 2: Convert to fraction form
    190,922.40/286,383.60 = 78,607.80/x
  3. Step 3: Cross multiply
    190,922.40x = 286,383.60 × 78,607.80
  4. Step 4: Simplify right side
    190,922.40x = 22,511,984,752.08
  5. Step 5: Solve for x
    x = 22,511,984,752.08/190,922.40
  6. Step 6: Final answer
    x = 117,911.70

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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.