Home / 190,878.49-286,254.15-76,996.89

Finding the Fourth Proportional to 190,878.49, 286,254.15 and 76,996.89

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Solution

The fourth proportional to 190,878.49, 286,254.15 and 76,996.89 is: 115,469.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,878.49 : 286,254.15 = 76,996.89 : x
  2. Step 2: Convert to fraction form
    190,878.49/286,254.15 = 76,996.89/x
  3. Step 3: Cross multiply
    190,878.49x = 286,254.15 × 76,996.89
  4. Step 4: Simplify right side
    190,878.49x = 22,040,679,299.59
  5. Step 5: Solve for x
    x = 22,040,679,299.59/190,878.49
  6. Step 6: Final answer
    x = 115,469.69

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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.