Home / 127,609.20-191,199.96-90,107.01

Finding the Fourth Proportional to 127,609.20, 191,199.96 and 90,107.01

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Solution

The fourth proportional to 127,609.20, 191,199.96 and 90,107.01 is: 135,009.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,609.20 : 191,199.96 = 90,107.01 : x
  2. Step 2: Convert to fraction form
    127,609.20/191,199.96 = 90,107.01/x
  3. Step 3: Cross multiply
    127,609.20x = 191,199.96 × 90,107.01
  4. Step 4: Simplify right side
    127,609.20x = 17,228,456,707.72
  5. Step 5: Solve for x
    x = 17,228,456,707.72/127,609.20
  6. Step 6: Final answer
    x = 135,009.52

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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.