Home / 190,257.80-285,386.70-111,331.40

Finding the Fourth Proportional to 190,257.80, 285,386.70 and 111,331.40

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Solution

The fourth proportional to 190,257.80, 285,386.70 and 111,331.40 is: 166,997.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,257.80 : 285,386.70 = 111,331.40 : x
  2. Step 2: Convert to fraction form
    190,257.80/285,386.70 = 111,331.40/x
  3. Step 3: Cross multiply
    190,257.80x = 285,386.70 × 111,331.40
  4. Step 4: Simplify right side
    190,257.80x = 31,772,500,852.38
  5. Step 5: Solve for x
    x = 31,772,500,852.38/190,257.80
  6. Step 6: Final answer
    x = 166,997.10

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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.